924Board.org

Dez · Joined: 25 Jul 2003 Posts: 189 Location: Wokingham, UK

Hello all. I'm still currently trying to rewire my 1982 924 since some of the wires burned under the fusebox but i'm nearly finished. I'm now stuck on a few things which, without the visual aid of another 924 i am really really stuck!.

The front loom has been put back together, however, i have a few wires sticking out under the servo unit which i have no idea about.

1) Cream wire with white strip, has a male end but black plastic protector on the end. I thought this would be for the headlamp washer pump but i have found that one.

2) 2 little brown wires, one with black strip down it. the ends of these wires are silver and about half an inch long, looks like bullet ends but thinner. on the inside of the car i think i have found the other end as it is 2 brown wires, one with black strip but they have a female end on. where does that go?

The most important thing is.... PLEASE!! o please could someone tell me the colours of the wires which go onto the male connectors on the back of the fuse box. There are about 10 spade clips numbered 1 - 10 and they have an (G) next to them.

Also, next to that is the letter (H) with about 5 big male connectors. could someone tell me which wires go on these please?

Photos would be brilliant but if someone with a 924 would pop his head under the fuse box to tell me where these wires go i would certainly be happy and in your debt.

Thankyou very much.
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1982 Porsche nine two four with Carrera GT conversion - people think i'm slow cos it's an X plate!!
http://www.p-caronline.com/directory/dez

CMXXXI · Joined: 05 Nov 2002 Posts: 1939 Location: Vicksburg, MS

I pulled & disassembled my fuse box last weekend and spent the week cleaning all the contacts, painting, etc. I will be down in the footwell all day on Saturday putting in the right-side mirror wiring harness and reinstalling the fuse/relay board. I'll take some photos and post links for you.

As for the "G" and "H" spade connectors, most are red and they are all HOT. On my car, two heavy gauge wires come directly to the battery and attach there, and other "feeds" attach. I don't think there is any particular terminal any one of the hot wires attach to. One of the spade terminals is larger than the others (separates "G" from "H" connectors), and there will only be one female connector that will fit on it.

(Click photo for more pictures)

Someone here on the Board asked a similar question some time ago, and I copied this to a file of "nice to know info" I keep. This may be what you are wanting. Don't know if it is complete, or how accurate, but looks good to me based on my recent exposure to things:

positivesale · Joined: 12 Nov 2002 Posts: 126

There's a good chance that the internal metal tracings of the fusebox are also badly corroded, discolored - if the external ones are. So it may be cheaper in the long run to just replace the fusebox. I think they are about 50-75 bux. Water moisture goes inside the fusebox and attacks the metal where you can't see it like in the pics that CMX shows. Looks like a lot of work to pull that sucker apart. Some VW's have fuseboxes that look the same, but are not. I haven't searched around for a VW one that fits matches up close or near perfectly, not sure if there are any.
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82 931

Lizard · Posted: Sat Jul 26, 2003 4:26 pm Post subject:

ok here is my suggestion get your haynes manual and get to know how to read the diagram, once you learn how to read it it is very easy and will tell you exactly how to connect it and where to connect it.

and it does show you what plug that wire connects to on the back of the fuse box
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3 928s,

CMXXXI · Joined: 05 Nov 2002 Posts: 1939 Location: Vicksburg, MS

I put my fuse box back in yesterday after running a new wiring harness that supports a right hand mirror. I too had a bunch of wires hanging around that I didn't know for sure where they went. I spent a lot of time going over the Haynes diagrams, and the manual didn't answer all my questions either. Here's what I came up with for the 10 loose wires (all ends are female spade connections):

1) Two large diameter red wires together in a plastic shielded-any H terminal
2) Two more large diameter red wires together in a plastic shielded-any H terminal
3) Single large diameter red wire in a plastic shield, the shield is flat on one side, "stepped" on the other - Vertical H terminal
4) Single large diameter red/black - G1 This gives power to G6, through fuse 15
5) Single small diameter black/violet - G7 to Fan relay
6) Single medim diameter grey - G4 to rear window defog switch (Haynes says this should be a black wire) This spade connector has another male spade on it's side to accept #7 below.
7) Two small diameter, grey/white & grey/green - G4 glove box and instrument lights
8) Single medium diameter yellow/white - G6 fog lights (just the rear fog llight in my case)
9) Single small diameter black/yellow - G3 power windows
10) single white - UNKNOWN It comes out of the blue "cannon plug" at pin D7, which according to Haynes isn't used. The diagram has pin D7 going to pin(?) 85 which isn't referenced anywhere.
<edit 3 Aug 03> It turns out that this white wire powers up my in-bumper European driving lights.

When I powered the car back up, nothing smoked or sizzled, and the things that did not work before repairing the fuse box now work.

For the record, this is my interpretation of Haynes for the G connections:
1-gets battery power, passes power through fuse 15 to terminal G6
2-energized by winshield wiper switch
3-energized by ignition switch, powers the electric windows
4-energized by ignition switch, powers rear fog light & instrument lights
5-energized by alternator, unknown use
6-from fuse 15 powers fog lights
7-to fan relay
8-energized at same time as high-beams for in-bumper driving lights (Euro-spec)
9-energized by alternator, unknown use
10-energized by headlight switch
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'79 Eurospec 931

Dez · Joined: 25 Jul 2003 Posts: 189 Location: Wokingham, UK

thanks everyone for your help. i now have the car starting perfect but apart from the mirror switch/fuel pump thing... I now have a problem where i turn the lights on main beam and the windscreen wipers come on. this alos happens when i use the flash switch. it seems that this switch is operating the wipers but the main beam doesn't work. i know it's probably mixed wiring. can anyone help with this?

cheers.
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1982 Porsche nine two four with Carrera GT conversion - people think i'm slow cos it's an X plate!!
http://www.p-caronline.com/directory/dez

Lizard · Posted: Thu Jul 31, 2003 2:19 am Post subject:

try taking off the steering wheel and the 4 screws holding it down sometimes dont ground, either scrathch up the surface of both as a temp fix or get some grounding washers, also run a ground wire to the steering column and test, if it fixes it great, if not then yes the wires are backwards somewhere
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3 928s,