Need a Wiring Guru - 73 Fastback

[Scorpion1110]

So I tend to be pretty good with wiring. I have fully wired about 6 cars (domestic) and have handled some import stuff, so why is the fastback kicking my a$$?

I have been on the technical page and have done forum searches but am still scratching my head.

I have the meter out but no continuity yet in the wires I am checking, so.....

I am trying to identify two wires at the battery.
; an approximate 10 gauge black wire with a 40 amp fuse heading to the front of the car. It's got a 1/4 inch eyelet and it's by the positive terminal. (I hate hot wires that are black). It's in a bundle with a white, yellow, and red.

The second wire is a tan wire approximately 18 gauge that goes back through the firewall. Its shielded and the wiring clips holding it place it at the negative terminal with a female end.

And finally, this orphan that's in the engine compartment driver side near the generator that is white with green striping:

Also, could someone recommend a good color-coded diagram source for the 73? The stock 73 diagram is a puzzle and the 71 while more helpful seems to be different enough that some things won't be clear.

BTW, I ordered the Bentley manual, but USPS has it buried somewhere in the southeast.

I just ordered 25 feet of ethanol safe 5/16 hose and 40 FI clamps to refresh the fuel lines, but before I even think about trying to get her started, I need to figure out the wiring.

Thanks for the help, the fastback is making me feel like a novice at the moment.

[Multi69s]

I'm guessing that at one time your car had air conditioning. At least the first picture by the battery looks like the typical AC loom.
_________________
69 road Bug 2110
73 Squareback - 2L, T4, Automatic W/ AC
Gone, but many fond memories 69 Baja Bug 2010 - 5 Rib Bus Transaxle
Gone but not forgotten 72 Baja Bug 2010
My builds
T4 into Squareback http://www.thesamba.com/vw/forum/viewtopic.php?t=458944&highlight=
Auto Trans Rebuild http://www.thesamba.com/vw/forum/viewtopic.php?t=516066&highlight=
AC in Squareback https://www.thesamba.com/vw/forum/viewtopic.php?t=...highlight=

[Scorpion1110]

[Multi69s]

That's a beautiful unit you have, what ever you do don't break it or throw it away. This is what I had to start with when I put ac in my Squareback.

Before

After, and a lot of work
_________________
69 road Bug 2110
73 Squareback - 2L, T4, Automatic W/ AC
Gone, but many fond memories 69 Baja Bug 2010 - 5 Rib Bus Transaxle
Gone but not forgotten 72 Baja Bug 2010
My builds
T4 into Squareback http://www.thesamba.com/vw/forum/viewtopic.php?t=458944&highlight=
Auto Trans Rebuild http://www.thesamba.com/vw/forum/viewtopic.php?t=516066&highlight=
AC in Squareback https://www.thesamba.com/vw/forum/viewtopic.php?t=...highlight=

[Scorpion1110]

Well folks I am stumped. And I hate stumped. The wiring in this type 3 is killing me. The schematics are odd and I cant find any type of color match on the casing.

And I used to think I was good at wiring. I have been humbled by VW.

So I have the AC harness dealt with. And I hooked up a brown wire located at the negative terminal and nothing exploded. So far so good.

So I have these two orphans which I cant sort.

Mystery Wire 1 is a clipped red right at the old pressure sender. (sender seems to have an extension added to it). red wire Appears 16-18 gauge.

Any good guesses?

Mystery Wire 2 is a disconnected wire coming from a group that dumps at the generator. It's coming from inside the cabin. It looks to be tan with green bands which is propped against a screwdriver in the pic.

Any help will be greatly appreciated!

Thanks, Dave

[Dfasty]

The clipped red wire is for an aar in an automatic equipped car.
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70 fastback automatic 06 invader

[Scorpion1110]

Thank you! I will cap it. and make a note.

Hopefully, someone can help me with the tan green. I want to identify everything before I start throwing juice through the system.

Dave

[Tram]

[Scorpion1110]

Thanks Tram.

That makes sense since the PO installed an MSD 5 spark box and a pertronix module. Probably left disconnected due to the mod.

Guess I am being AR on checking leads.

BTW I have been reading all of your posts on FI - Good informative stuff.

Thanks, Dave