1983 944 with Air conditioning wiring question.

cauzomb · 07-12-2010, 08:22 PM

Car is 1983 944 "US, VIN zzz" with air conditioning "important for wiring info" cause they are different than non AC ROW cars.

Anybody know what the 2,5mm red with black and yellow with black wires are for?

I found these two wires cut behind the main fuse board, I think maybe they go to relay sockets that I disconnected a while ago when I started repairs on the wire harness/fuse box.. Can't remember what they are for now and I'm stuck at these two wires.... I don't remember cutting them either..

They are loomed with the rest of the wires that go up to the additional fuse panel.. Too dark to see what fuse numbers they are connected to but it looked like fuse 1 and 2..

Not certain which color to which fuse, just that they were closest to those two fuses.

Looking at the wiring diagram, http://www.pelicanparts.com/944/electrical/944_84_1_2.jpg

The red with black looks to be for the DME relay socket pin 4, I can check this out when the sun comes up and repost exactly what fuses they are connected to.

If anyone knows off hand, please feel free to post.

If you have photo's of the additional fuse board with all the wires still connected, showing what fuse numbers they are connected to, I could use them for reference..

Thanks in advance, will post pictures of my wires/fuse panel in the morning..

cauzomb · 07-12-2010, 08:38 PM

looking through the pelican 84 944 AC diagram http://www.pelicanparts.com/944/electrical/944_84_AC_2.jpg

I find one 2,5mm black/ye or ye/black wire from additional fuse board fuse 5, to Cooling fan relay terminal A.. So.. This one and the one above for the DME relay might be my two wires, but my car is an 83.

Dunno if that matters.

I will check the fuse numbers and wire colors and post pics on these as well as check back to see if anyone has replied in the morning..

Thanks in advance.

cauzomb · 07-13-2010, 12:24 PM

Here are the pics showing the two cut wires and the additional fuse board.

Both black with red and black with yellow wires go to fuse number 1

cauzomb · 07-13-2010, 12:44 PM

According to the pelican wiring diagrams, fuse 1 on the additional fuse board is for the concealing headlight circuit.

http://www.pelicanparts.com/944/electrical/944_84_2_1.jpg
"Red with blue, 1,5mm from headlight concealing motor to fuse one on the additional fuse board, then 4,0mm red from fuse 1 to wire continuation marker letter I on part 4 of the wiring diagrams.

http://www.pelicanparts.com/944/electrical/944_84_4_1.jpg "wire continuation marker, letter I" shows Red, 4,0mm to fuse 4.

Fuse 4 on my additional fuse board does have a 4,0mm RED wire, with a doglegg from the 4,0mm red wire side, via another 4,0mm red wire over to fuse 9, also, there is a white with red 4,0mm on fuse 4 that leads out to the rear defogger relay.

Fuse 9 on my additional fuse board has a doglegg 4,0mm RED wire to Fuse 5, and a smaller red wire leading out to the wire loom, can't tell if it's red/blue.. I will take another look at it.

cauzomb · 12:50 PM

According to pelican wiring diagrams, the other red wire 2,5mm shown on part 4 above, wire continuation marker letter "T", from fuse 9 on the additional fuse board, leads out to the fresh air blower relay. Fuse 9 on the AC diagram shows the same configuration for fuse 9, red 2,5mm from fuse 9 to fresh air blower relay..

http://www.pelicanparts.com/944/electrical/944_84_6_1.jpg

cauzomb · 07-13-2010, 01:02 PM

This is really frustrating, I can't find what these wires are supposed to be connected to.

cauzomb · 07-13-2010, 04:35 PM

OK, I think I found my headlight lifting motor wire "red with blue stripe" Coming out of the main forward wiring harness behind the fuse box, it's tagged onto a larger Red with blue stripe wire, leading up to what looks like the DME relay socket... That right there is SKETCHY! The red with blue and red with yellow wires are supposed to be connected to the DME and the fuel injectors.. WTF..

I checked my headlight motor plug and found a red with blue stripe wire up there, so I gotta test em for continuity.

PO nonsens, also see a black with green wire twisted and tapped together back there, leads up to the black/green wire on additional fuse board, fuse number 2.. yay, 2 more wires to deal with...

So.. I could in theory plug the headlight lifting red with blue wire into one of the fused black/red black/yellow wires leading to fuse 1 (If those wires don't do anything on my car), since I can't find what they connected to originally..

Then dogleg a 4,0mm red wire from Fuse 1 hot side, to fuse number 5, since fuse 4's hot side is occupied, and that should be very close to factory; for having a fused headlight lifting motor, powered by terminal H on the main current in from battery to fuse box..

I have extra wire and connectors to make the jumper, but I'd really like to know what those other two wires are for..

Going to disconnect my headlight motor plug, then probe between the tagged on wire and the headlight motor plug to see if the wire in my photo is for the headlight motor..

It's the only smaller red with blue stripe wire that I could find coming out of the forward wireharness loom behind the fuse box.

mattdavis11 · 07-13-2010, 04:39 PM

From what I see, the yellow with black stripe goes to terminal A on the cooling fan relay from fuse 5 on the additional fuse board... Let me keep looking on the Black/red.

cauzomb · 07-13-2010, 04:42 PM

Looking again at the DME relay wiring, terminal B has the red with yellow and red with blue wires, red with blue leading out to the fuel injectors; then out from the fuel injector plug via a black wire, to the tachometer terminal 5.. Dude, if my headlight lifting motor is plugged into that.. WOW..

cauzomb · 07-13-2010, 04:44 PM

Thanks Matt, fuse 5 is wired properly; even checked the cooling fan relay plug that has the yellow with black wire, and fuse 5 yellow with black stripe for continuity and it checks out..

Have a look at my last POST, this is amazing! the previous owner powered the headlight lifting motor off the fuel injection/DME relay..

mattdavis11 · 07-13-2010, 04:55 PM

I thought this was about a/c so I chimed in, I now nothing about the rest of the stuff, sorry. The black one with red strip should go from terminal 87 on the cooling fan relay to the fan in front of the car. I'm really of no help unless you need to sort the a/c wiring out.

cauzomb · 07-13-2010, 05:33 PM

Thanks anayway, I just mentioned that it has AC in the title, because the wiring is a bit different than NON AC cars.

I checked all my cooling fan relay wires and they are wired correct for an AC car, I had to replace a couple sections of wire from the cooling fan relay to the cooling fan/slow speed resistor that were overheated, when the cooling fan bearing went out....

This nonsense all started whith a failed cooling fan bearing on the drivers side/slow speed circuit

took out the AC relay under the dash/glove box, and a couple thinner wires.. Then I found all the other wiring problems that were related to headlights, foglights, ignition wiring, guage wiring etc... To top it off, there were some other hot wires that shorted to the hood release cable housing that was worn away by rubbing part of the clutch linkage, cause the previous owner didn't put all the wires back into the wire loom tabs/mounts, they were bare insulation, no looming and chafing on alot of parts, then there was a foglight power wire leading from the foglight switch, up and around the steering shaft, "wrapped on the steering shaft, moving parts" then out the firewall, no looming, no grommet....

The hood release cable was glowing red hot and dripping the cable housing plastic down onto the wires behind the fuse box and melting away at some of the other power wires.. Got all that stuff fixed except these last couple of things...

All the cooling fan/ac relay/fresh air blower relay stuff is sorted, except a couple wires for the fresh air blower relay, still disconnected from the relay socket, but I put labels on those wires before I disconnected them.

I've yet to find what the additional fuse board, fuse 1 wires were originally connected to..

I think it's some more of the Previous owners shenanigans.

The book/diagrams all say additional fuse board, fuse #1 should have a RE/BL wire from/to the headlight lifting motor, and 4,0mm RE jumper From hot side of Fuse #1 to hot side of fuse #4...

If you look at the picture of my additional fuse board, It looks like power comes into the hot side of the fuse board from the back of the main fuse box, plug H; via a pair of 4,0mm red wires to fuse #3 and fuse #4. There isn't a jumper from the hot side of fuse #4 to the hot side of fuse #1..

There are 4,0mm Jumpers from the hot side of fuse #3 to the hot side of fuse #6, and from the hot side of fuse #4 to the hot side of fuse #9..

Then Fuse #9 has a 4,0mm jumper to hot side of fuse #5

I'll have to check what that loomed red wire is at the hot side of fuse #8, cause it has a small jumper from the the hot side of fuse #6, going to the fused side.. It's supposed to be on the other side of the fuse board, fused power OUT to accessories and the hot side jumper looks like it's not of the standard/factory 4,0mm wiring.

cauzomb · 07-13-2010, 05:54 PM

looks like fuse #2 is wired correctly; in the photo above, I see fuse #2 hot side has a Red/black wire, from DME relay; and two black/green wires on the fused side. I followed the 2,5mm black/green wire and found it going to the back/to the fuel pump. I followed the 1,0mm black/green wire and found it twisted and taped to another black/green wire, shown in photo above, it's supposed to go to the warmup valve "suplimentary air valve" this worked last time checked..

Fuse 4, 5 and 9 apear to be wired correctly.
as does fuse 3 and 6 but the jumper from fuse 6 to fuse 8 in my photo is a little strange.

Trying to find fuse #8 in the wiring diagrams.

cauzomb · 07-13-2010, 06:03 PM

OK, found additional fuse board fuse #8 in the electric windows diagram, unfortunately, the diagram doesn't say what Fuse 8 connects to, other than the electric window control relay..
It does show that the wires should both be RED 2,5mm.. Gonna go test some wires.

http://www.pelicanparts.com/944/electrical/944_84_elec_windows.jpg

cauzomb · 07-13-2010, 06:40 PM

@Mattdavis11; Thank's for this post: Relay location back in 06

I usually try n search things out before posting, that right there is the reason..

The info about the window relay location should help me figure out the correct wiring for fuse 8 and correct the jumper diameter/position, if needed.. Probly the reason my windows roll up so dang slow compared to my buddy's 83 944.. The jumper to fuse 8 is probly 2.0mm and on the wrong side of the fuse board.. not that the side matters, but the diameter of the wire's probly bottlenecking the current to the window relay, if that is what I have connected there..

I'm still not finding any information about the black with red and black with yellow wires coming/going from fuse number 1..

I will address the fuse 1 wires once I get the other bad wires fixed, and make sure I didn't miss anything behind the rest of the wires as I put stuff back up to the main fuse box..

Could be that they were from an install and removal of an alarm system?

I'll try to put the headlight lifting motor wire back to fuse 1, with new section of factory color wires, and propper 4,0mm jumper.

It's a little strange though cause the wiring diagrams from the 84 shows additional fuse board fuse #4 hot side having 4,0mm red, IN from main fuse panel plug H, then 4,0mm red jumper to fuse #1 and another 4,0mm red jumper to fuse 9..

Looks like there's only room on there for the hotside jumper to fuse 9 on my 83's additional fuse board.. oh well.

cauzomb · 07-13-2010, 09:02 PM

I have confirmed that the PO did actually connect the headlight lifting motor ReBl wire, to the DME relay wiring, ReBL.. pulled the the wire off, it was just twisted on and taped over.. I probed it for chassis ground in the cabin and at the headlight motor and got no short to ground, then ran a section of old speaker wire out from the tagged on little RE/BL wire in the cabin, up to the front of the car, then probed between the speaker wire and the headlight motor plug with multimeter and got continuity.

I followed the 2,5mm loomed red wire from aditional fuse board, fuse #8 hotside, back to the window relay, confirming that the 83 window relay wiring is the same as in the 84 wiring guide, except mine was on the opposite leg of the fuse..

I did not find anything that those two cut wires from fuse #1 could connect to, I am going to unplug them from the back of the fuse board, then use them to fish up a new 2,5mm Re/Bl through the looming, for the headlight lifting motor.

My additional fuse board doesn't have a 3way connection on fuse #4, so I don't have a spot on fuse #4 to jumper over to the headlight lifting motor..

There's an open spot on fuse #5 but I'm not liking all the extra connections inbetween, the loss/resistance between the jumper connectors, and maybe too many items sucking power through those wires..

I'm going to run a new 4,0mm red Hot side wire from plug H to fuse #8 "window relay"

I have a couple extra spots on plug H, and a section of 4,0mm red from a vw at the wrecker, complete with the correct size and insulated plug terminal for 944's plug H. Just hoping it's long enough.. If not I can crimp, solder and double heatshrink on another section of wire to make up the length, I will make the crimp section close to the fuse box as that is where I did the other repairs to the shorted batt+ constant to plug H wires..

All the large plug H tabs are part of the same internal current path on the fuse panel, they all get power from a pair of 4,0mm red wires that come in from batt+ constant. Plug H on the back of the fuse box has a couple empty spots that I could use for the window relay fuse power wire..

I think the extra wire to the window relay, then jumper a 4,0mm red Hot side from fuse #8 to fuse #1 and put the window relay power wire on the other side "fused side" so they are all lined up, power in/fused out.... Should be good to go then..

Any how, thanks for looking; hopefully, the info will be usefull to someone else, if you can understand how I write stuff lol..

Next up, headlight remote relay harnesses for h4's, to keep my wires from melting again :P

Gathered extra wires from a vw at the wrecker's. Going to replace my burnt headlight wires/plugs, and build a remote headlight wire harness. I got enough wires/grounds and fittings to build extra engine ground straps, and got a good pair of number 53 relays to use for the high's and lows.

cauzomb · 07-14-2010, 03:57 PM

Found the red/blue wires, some 4,0mm red wire and a couple other cool parts at the wreckers this morning.. Nice matching pair of weather resistant 12v 40A relays and cool relay holder that bolts down. Now all I need is a couple of headlight plugs/sockets and 8 or 16 locking 1/4" spade connectors.

mattdavis11 · 07-14-2010, 05:38 PM

4,0 red to fuse 5, yl/bl out to A terminal on the cooling fan relay.

Fuse 4 was left open to tap into, on the additional board. It's a ROW car though.

Good find.

cauzomb · 09:53 PM

I rewired the additional fuse box this evening

I fished up 3 red/blue wires through the looming and put them on fuse 1. They were a bit smaller than the factory headlight lifting motor's re/bl wire, so I tripled them up to provide enough current out from fuse 1..

Got an additional 4,0mm RED fished up through the loom. Plugged it into to fuse 8 hot side, for the electric window relay, so now my power windows should be getting the power they were supposed to..

Before they were fed by a thinner jumper from another fuse that was jumpered to another fuse lol.. The power window relay's power wire out from fuse 8 was a larger diameter than the jumper that was feeding fuse 8 lol..

Swapped the electric window relay fuse holder tab from one side to the other, so now all the accessories that get fused power are on the same side of the fuse box..

Added a 4,0mm jumper from the hot side of fuse 8, to the hot side of fuse 1, to provide power for the headlight lifting motor.

I Left the rest of the fuses/wires alone cause they were wired correctly.

Before:

After:

cauzomb · 07-17-2010, 12:52 PM

According to my notes while taking my fuse box out, the "black with red" wire that has the insulated connector came off of main fuse box plug G pin 1

So, while I was installing everything back onto the main fuse box, I followed the wiring diagrams for plug H wire/color codes.. So now I have RED with BROWN to G-1.. I searched through my diagrams and couldn't find where the Black with Red wire is supposed to plug into.. Is it possible that it goes to plug H instead? Gotta search through the diagrams for all H connections yet, but thought I'd ask in the mean time..

I followed the wire up to the wire harness that leads out into the engine bay.. It's in the same harness/loom that has the Batt+ wires.. Lost track of it from there..

Gonna go take another look under the hood at like, the AFM, or other 12volt items to try and find it, then check the rest of the diagram for anything to plug H or plug G.

Here's a picture of the wire in question.. And a picture of how hot the rear hatch is below the cover, at 11AM