Fuse box layout help

[Wil Ferch]

Don't just move wires around because of how it looks for a similar car..... you might get lucky but you might also do damage....and you'll never know "why". At some point, the factory circuit needs to be confirmed correct for your car..... OR.....you need to develop your own car-specific schematic.

What Ossiblue says is 110% correct. We all know that "power-in" is thru the white incoming wire to fuses 7 and 8 to check why high beams aren't coming on. Check for power at top of these fuse locations when you think there should be power. If none....you know what to trace. You have the 85 wiring schematic as reference and you can also ( better) trace your own physical source of wires/power. Most of these cars have problems, longer term, with the steering column switch, but it's best to do a circuit check.

[HarryD]

Ryan:

Get back to basics.

Pull the fuses fromthe two high beam sockets. Run a wire from the positive of the battery to the lower point on the fuse holder. Each headlamp should light in turn.

If that happens, replace the fuses and touch the wire to one of the tops of the fuse holder, Do both lamps illuminate?

Get a test lamp (or voltmeter). Connect it to the top of the high beam fuse. With the head lamp switch on, the stalk set to high beam, put the key in the run position and see if you have 12 volts at the block. If you do not, turn off the headlamps and use the pass to flash action ofthe stalk. Does that send power to the fuses?

What we need to do is find out which parts of the circuit are working, and which are not.

[mthomas58]

Originally Posted by Wil Ferch

No problem.... hate to see wiring fires..... seen enough of that....so I'm sorry if I come off less than Emily Post etiquette on this topic. Like to see us guys get it correct if we can....

The attachments should be enlargable once captured.

For reference:

Blue= 25A
red= 16A
white= 8A
yellow= 5A

BTW...if we use the factory arrangement for 79 model year....the Tech/Spec Porsche books says it follows exactly my fuse convention I show for the 85 in my first attachment. Reading front-of-car....to back....and saying front-most is #1--->

1-foglites 16A
2-license plate lites 5A
3- fr/rr parking lites right ... 5A
4- fr/rr parking lites, left...5A
5- low beam ,rt...8A
6-low beam, left...8A
7- hi beam, rt...8A
8- hi beam , left..8A
9- fr turn signal, rt...5A
10-fr turn signal left...5A
11-l/r stop lights, flasher relay, backups...16A
12- rear defog relay,blower, rear defog indicator lamp.. 25A
13-windhield wiper/ washer ...25A
14- sunroof, rear wiper...16A
15-Aux heater, cig lighter, blower switch indicator lamp...16A
16-power windows..25A
17-emergency flasher...16A
18- interior lite, clock, glove box lite, trunk lite...5A
19- headlight cleaners, etc...25A ( 16A in 76, 16A in 78, 25A in 83, 25A in 85).. ????
20- A/C, A/C blowers, P/S...... 25A
21- P/W, sunroof, seat htr, 25A ( 16A for 76, "fuel pump" ?...???)

I'm looking to move the front condenser blower motor off of A/C fuse #20 to the most likley spot (#19) as suggested by others. Per my 1987 fuse diagram #19 is a 25 amp fuse serving the Convertible Top (don't have) and Headlight Washers (I do have the bumper jets). Does this curcuit actually control the pump located on the fender washer tank? Is there one pump to the Headlight/Windshield washer system or two pumps? Just trying to confirm my understanding that there is only one pump controlled by fuse #19 and all other electrical components of the the wiper system (switches, delay, wiper motor & heated nozzles) are on fuse #13 (actually #12 on my fuse diagram)

Thanks