Wiring fuse box Help needed for 83 SC 3.0 to 3.2 Euro conversion Photos?

[Blackbyrd]

Hi

Looks like I'm stuck with my 3.2 conversion project
83 SC 911 to 3.2 Carrera ROW
My SC in question


Everything bolts right up since I used the same ROW transmission from the Carrera. (I wonder what the gearing is like)

I used Carrera Fuel lines (provided at no cost by LA Dismantlers)
at no cost. Took the old SC lines and installed the Carrera lines.

The rear Carrera engine harness was ran through the body with out having to drill a hole. (used same hole)

The pins in the engine to current body harness were swapped around to match.(easy enough)

All the rest of the connectors matched up.

The only two cables not used in the rear looks like the plug was cut
One is Green and maybe bluish or faded black....I think these are for the heater blower



OK THIS IS WHAT I NEED HELP WITH:

I dont know the proper numbers of the fuses on the Fuse panel
I have a USA fuse panel on my 83 911 SC coupe
example: 15, 25a, bus50,21,

Im using this thread
Motronic harness questions on 3.2 conversion

to help me with my conversion

the 2.7 to 3.2 wasn't too helpful
Modification


I need help to identify where these 9 wires coming from the front of the harness (from DME)

Colors
thick red
medium red/green
thin purple/black Tach
thin black Tach
thin black with current running
thick black
medium Yellow
thin green yellow
thin green/white


Here is what I know so far

Thick red wire goes to Battery but I see it needs a fuse what is the fuse it needs ?

Thick and thin black wire (with current) go to the 4 terminal(15) (right?)

Thin black (no current) goes to tach (but where ????)
Purple/black goes to Tach (but where) A photo would be nice

Red/Green goes to fuse terminal 3 (right ?) 25a (where 25a??)

Yellow is Start signal right? but where does it connect ? (photo)


The next two are A/C related I assume but I am not running a/c
although I do have the heater control in my dash (only) no other knobs or controls

Green/yellow a/c compressor switch ..where does this wire into ? (photo)

Green/white a/c Related ...where does this plug



SO if someone has photos where these wires connect a little bit of help would be appreciated ....

I plan to reverse engineer all this when im done and do a better step by step/ youtube video on how to install a 3.2 into a 3.0 for dummies

because obviously I couldn't figure it out lol

Thanks



Are these heater blower cables ?

colored wires (yes I'll fix the damaged wire)


Where does this green/white wire go ....it is A/C related but Im not running a/c



Where does the blown and black wire connect to ? are those ground for the seat ?

complete look of the harness for the 1984 911 3.2 Carrera ROW

Easy to work on interior





As some of you guys know I sell a bunch of stuff on the for sale section if someone helps me out Im more than willing to give big discounts on my parts

TONS! More parts for sale New lower prices 911SC/Carrera/964/993

[boyt911sc]

Originally Posted by Blackbyrd

Hi

Looks like I'm stuck with my 3.2 conversion project
83 SC 911 to 3.2 Carrera ROW


I need help to identify where these 9 wires coming from the front of the harness (from DME)

Colors
thick red
medium red/green
thin purple/black Tach
thin black Tach
thin black with current running
thick black
medium Yellow
thin green yellow
thin green/white

Blackbyrd,

Do you have a 3.2 Carrera wiring diagram to use for reference? If you don't, it would be wise to get a copy and have a good look at it. On pages 970-26 & 27 (Bentley's Service Manual for 911 Carrera) are the schematic diagrams all you need. Those wires could easily be identified if you trace and identify their pin locations.

What are their pin locations @ (DME) plug? For example, there are 3 yellow wires connected to the DME @ different pin #'s (4, 14, & 16). If you check the pin location, then we could help you identify where it is going. HTH.

Tony

[Blackbyrd]

Thank you tony for taking the time to help

Does any one have a BIG scanned copy ?

I've seen the diagram but I don't understand it.... wiring digrams to me are like when Charlie brown hears his teacher talking (or adults)

I don't have a bently guide and I don't have the time to get one I gotta finish it by this weekend.... so I came on here figuring I could get a short cut


The yellow wire is part of the LONG harness like the rest of 8 cables
not sure what pin it is at since the car isn't infront of me but rather with the
mechanic.

I read this about the yellow wire:

- One 16ga yellow wire from the "start" signal (bus 50) to pin 4 of the DME. This is the same signal sent to the starter solenoid when starting the car. W/o this, the DME won't turn on the fuel pump when starting.

But where does it connect.....this the only one I have left to connect


I will find out later today.

[Flat6pac]

The small black wire powers the DME relay for the fuel pump, give it 12 volts
The coil wire gets its power from emergency lights on the fuse board, tap into emergency lighting wire below the fuse board
The fuel pump wire feeds into the top of the fuse board replacing the wire for the fuel pump.
The black/purple jumps to the back of the tach where the body purple/black attaches to the tach
This is off the top of my head and I dont remember the colors and have sold my DME harness.
Bruce

[Blackbyrd]

Thanks again for the help bruce

but now im confused

Thin black wire has current is suppose to connect to the same fuse as the thick black wire ...right ?


"- One 14ga black wire from the run/start +12V bus (15). This is power to the coil.

- One 16ga black wire from the run/start +12V bus (15) to pin 86 of the DME relay."

Red Green fuel pump wire 25a fuse figured out

Black/purple figured out goes to tach
but hen Im left over with 1 thin black wire ...I read this goes to tach as well ????


NEED HELP WITH:

Yellow wire from the 8 wires from DME harness ...I believe this is the start wiring
Also what fuse size goes from the red wire to the battery




I have 2 complete wiring from a 88 911 and non of these colors are on there connected to the fuse panels...unless someone disconnected them

[Blackbyrd]

been up all night researching time for some sleep tomorrow I start the wiring with no clue of that yellow wire

[E Sully]

Red wire is not fused, Porsche does this often. Thin black wire to tach is upshift light. If not using gauge with this option, cap it. Yellow wire connects to yellow starter wire from ignition switch. Although different years, you may find some info you need in this thread.
HELP Please! with another 1973 3.2L implant

[Blackbyrd]

Update: 1983 911 SC chassis to 1984 911 3.2 carrera (row)


Issue#1

So I figured out where the yellow wire goes to.....easy ignition
Photos of the connection coming soon.


But now I got another set of questions concerning to wiring

the rear connectors

SC original chassis harness 11 pins (used)
3.2 Carrera engine harness 11pins (used)

are exactly the same

I figured out how to connect and match all the wires except 2

1 red/white wire on chassis harness
1violet(or purple)/ black wire on chassis harness

BOTH PLUGS


engine harness color wires are
(this seems simple enough)

Left side (all matched) Right side

1)Yellow(matched) starter Kl.50
2)Red (matched) source from alternator Kl.30 ( or B+ )
3)Green/black(matched) Oil temperature Instrument
4) Red/Green (matched) Oil pressure Instrument
5) Green/yellow(matched)???? is this from ignition.( Kl.15 ) to backup light switch
6) Grey/brown (matched) backup light switch to lights
7) Space
8) Brown/Black (no brown/black on other harness) temp switch for fresh air blower
9) Green/white(matched) space Oil pressure idiot light
10) space
11) Blue(matched) alternator control light Kl.61 ( or D+ )
12) space
13)Yellow/Black(matched) power source for fresh air blower
14) Red source from alternator Kl.30 or B+



so question: what do I do with the brown/black wire ....there is no brown/black on the other side....????



Ok now Chassis harness pins
This pin is the Mirror opposite of the other pin so they match up when they plug together

right side left side all matched)
Space
green/red(matched)
Grey/brown (matched)
Space
Red/white Thermovalve (not used ?????)
black/violet(purple) is this tachometer ???
Red (matched)

So question here is

What do I do with
Black/violet
and red white

I want to say red white gets moved to match the solid red ???

and I think black violet goes to a empty slot where it doesn't touch anything on the other plug


Issue#2
The tach!!


so I know im suppose to use
2 wires from the 3.2 carrera dme harness to go to the tach
Black (thin no current) upshift ?
black/violet(purple)


When I went to go look at my SC tach (soon to be a Carrera)
I noticed that there was a black/purple/violet wire plugs in
but did notice the black wire


so my question is......

Do I disconnect the black/violet wire and add the dmes black/violet wire or leave it alone ?

second question

the thin black (upshift) wire where does this plug too ?


colors on the back of the tach are

white/red
Red/black x2 into 1
black/violet
brown 2x into 1



#3 issue (it looks like these have been unplugged forever)

Also I found a big set of pins on the front trunk that aren't being used what are they




Brownx2
White
black yellow
Yellow
blue
brown/black
Grey/brown
black (2 on one pin)

+ one connector

#4

confirming that these two are for the coil




any help would be appreciated


current state of my 3.2 engine in the SC




still need to extend the wires for the tail light harness

[Blackbyrd]

Seem like after just diving into the cars wiring you really start to get a perspective of what to do.


The hardest part seemed like it was the sodering butane tool not working.... lol
2 soldering guns later (and a trip to O'reilly's )

I got The 3.2 Carrera DME wiring harness to front trunk soldered, shrink wrapped and routed through the trunk.

Figured where the 7 of the 8 wires that lead from the DME to the front trunk fuse box.


-Thick Red cable to battery cable was routed but not connected yet.

I looks like I could use the previous existing red battery wiring that was already there.
Maybe I could wire it together if I find where it comes from.
(3 Red cables were already wired to the positive battery terminal) <---????

-Green/Red cable wired to its correct fuse post

-Thick black Cable was wired to its correct fuse post

-Black/violet (purple) Tach wire is routed back through the trunk and into the gauge area
( the gauge already has a Black/Violet cable) so Im wondering if I should fuse them or remove the previous wire and add the new one ??

what to do here????

-Thin back wires x2
I still don't know witch one is the power wire until I test it (need the proper tool)

but it still leaves me with the question....

Where does the black tach cable connect too ?
I hear this is a “upshift cable and is optional.
I plan to use the Carrera tach since this is whats is required
(yet i've read in various conversions where they can keeep the Stock tach)

-Yellow cable (ignition) has been rounted but Im not sure if:

1. connect to the actual ignition plug
2. or if it goes to a different location (fuse box ??????)

- Green/yellow wire won't be needed since im not running A/C
-Green/white wire not being used either (a/c related)


I was lucky enough to have 2 left over 1988 911 Carrera chassis wiring harnesses + misc harnesses.
So I stripped and used as much OEM wiring as possible.
In the process of working with the cars wiring I removed a few onces of extra butched cables.
Included: fake 80's kill swich and stereo related stuff.

Only thing needed left to do is

14 pin connectors!

I figured the Red/White pin wont' be used.
All the other color pins match except a Black/Violet (purple) and a Red Pin on the opposite side.

So from chassis harness : black/violet goes ???
from Engine harness : Thick red goes???

Need to do more research

I think im inspired to make my own “light weight” wiring harness with the left over cables from the 2 88 chassis. (ha! Dreaming...can't even wire a few plugs lol.


Currently the DME is sitting in the passenger side.
But I think im going to route it so its like the Carrera on the driver side.

Planning to fabricate a panel for it to sit on or some sort of enclosed box so no “accidental” water gets on the DME and DME relay....this already happened to me once...lucky Progressive ins covered it.

Also all engine plugs are in there correct order
Coil wires (extended using 88 wires )

I really need to go get a Bently repair manual for the wiring. I think I'll get one through the host (Pelican) They ship fast enough

I think I will get this one: Pelican Parts - Product Information: PEL-P989

Only $89! shipped
Unless someone has a used one for less

Pictures coming soon and hopefully I can figure out the wiring soon.

Oh almost forgot the new Carrera Fuel filter was perfectly mounted as well.

Blackbyrd~

[crustychief]

I hope these help you.

[Blackbyrd]

I know I'mmmmmmmm gonna laugh at my self years later over this thread

but I still don't 100% get it
Wiring diagrams are like Charlie browns teacher talking




1)I see where the diagram shows the
Black wire (thin)
Black violet wire

connect to on the tach but it doesn't show what widon'tou dont use on tachometercometer
Or what you do with the existing black/violet cables

wires on SC tach
Brown x2 into 1 (ground)
Violet black (tach signal)
Red/Black x2 into 1 (power)
White/Red

What wires get eliminated or fused together ?

I saw this thread:
Tachometer tap 3.2

and noticed the back of a Carrera tach for the first time
(ive had a 3.2 carrera but forgot the look of tach)

So this helps a little more....
I also read in 4-5 thread to contact Steve timmons!!
is he the 3.2 Wiring harness god or something ??...gonna try him out soon.

ENGINE/CHASSIS HARNESS IN TRUNK

so I read that
Black/Violet wire in the chassis harness gets plugged up and not used.... is this true ?
Same goes for the Red/White

The extra Red wire doesn't get used either because it goes

“we also got some tips from Steve Timmons for wiring which were helpful. One of his printed instructions I recall well- don't connect the #2 red wire in the ## pin harness connector in the engine bay. It will back-feed the system. “

so now that I red this does this mean the # 2 Red pin from the 3.2 Carrera DME harness doesn't get used?
Because it's no currently connected to anything.
(do I just plug it)


confused !

The 3.2 DME engine harness has 2 red wires

pin# 2 and pin (connected to the opposite side matched color) # 14 in the corner

OK moving on


What to do with the brown and black wire seems like it doesn't go anywhere

The more I read on and on in Archive the more I realize my wiring harness in the engine compartment is pretty much all matched up

just double checking if I don't need to use

From 3.2 Carrera DME engine harness:
Pin# 2 red doesn't get used source from alternator Kl.30 ( or B+ )
Brown/black temp switch for fresh air blower


Wiring from 3.0sc chassis 14 pin harness
Black/violet doesn't get used Tachometer
Red/white doesn't get used Thermovalve

so considering my research and finding I think I'm in the clear
Just need to confirm this info

Now for that Pesky Yellow wire from the DME harness inside of the car.....

from what I read this yellow wire gets wired to the actual ignition under the dash.
Cant see anything else that says other wise

any suggestions....once this is all done im gonna go back and redo this thread and maybe do a little tutorial to help out other who get stuck like I am....MAN I love this forum there is soooooo much info Im tempted to add a custom pelican decal to my car lol


Efren
Blackbyrd

[Flat6pac]

I cant say I ever wired any wire under the dash...Youre making the install way too confusing, its not 1984 when we were trying the first Carrera engine install.

Bruce

[crustychief]

Behind your brake booster, coming from the ignition harness, there should be a little tail of yellow wires that are daisy chained together, that is where your yellow wire goes. The black-violet wire to the tach carries the rpm signal, the black wire just turns on the shift light, safe the black wire off.

[stubble88]

Hey. What ever happened to updating this post after a successful result?

[micheloaks]

@blackbyrd
AEfren

Been asking you to make payment for yhe sest base you wanted , from Australia

I pulled the seat apart, I've driven twice to the Shipping company . In total about four hours of my time, and you still have not paid me for the seat .

You pay me for the seat

You pay the Shipping company directly .

It's been very clear in my messages sent over Facebook Messenger