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79 Brat DL 4wd Harness help!


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20 replies to this topic

#1 BlindSight

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Posted 02 July 2012 - 02:17 PM

Decided to start a new thread for this outside of the classifieds. So I started going through the original harness and comparing it to the ones I have. One of them is relatively close so maybe you wonderful people can help me make it work. Here it goes....

SO here is the biggest difference, original harness on top, new one on bottom.
Posted Image

Close-up of the old harness..
Posted Image

New one...
Posted Image

Under the hood, old one has two black wires and one yellow to the condenser(think its the condenser), New one has 2 yellow, one black, and 3 other black with various stripes that are clipped.
Posted Image

#2 moosens

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Posted 02 July 2012 - 06:09 PM

Somekind of option like a plow or winch maybe was once installed? Looks too light gauge of wire for a plow , but I could be wrong. My winch wiring is that gauge , I'm pretty sure. A/C eliminated ?

What's the build month and if you don't mind the VIN # too. If you're not comfy with that you can X out the last three digits.

#3 BlindSight

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Posted 03 July 2012 - 01:17 AM

Any ideas on the differences of the connectors? Will try and remember to get the VIN and such tomorrow and share it. THANKS!

#4 moosens

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Posted 03 July 2012 - 11:08 AM

I'll check what I can in the parts manual over the next few days.

Did this one once have A/C ?

#5 talldude

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Posted 03 July 2012 - 12:11 PM

Google '78 subaru wiring harness/diagram. I found a Mitchell schematic for the '78 BRAT that is pretty good.

#6 BlindSight

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Posted 03 July 2012 - 05:06 PM

mine didn't, not sure about the harness I got.

#7 BlindSight

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Posted 05 July 2012 - 02:34 AM

Any ideas? Going to start trying to put it together and make it work tomorrow. Guess if all else ill see what ends up not having a connector that fits and hope its nothing important. If it deals with the ac/heater stuff ill just remove the whole blower assembly and be done with it. Going to rat it might as well rat it right?

#8 BlindSight

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Posted 05 July 2012 - 03:29 PM

Ok, so I am pretty sure those other two connectors go to buzzers...that I don't care about but im trying to figure out what to do with the condenser wires.Posted Image
The original harness had one eyelit with a black and a black with white stripe wire and an eyelit with a yellow wire. The new harness has an eyelet with a black with red stripe wire and an eyelit with two yellow wires along with a black with red stripe, black, and black with white stripe wire that were all cut.

Edited by BlindSight, 05 July 2012 - 03:33 PM.


#9 talldude

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Posted 05 July 2012 - 10:27 PM

black and red with stripes look like they go to the ballast resistor and + on coil, yellow 2 connect to - on coil.

#10 BlindSight

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Posted 06 July 2012 - 01:23 AM

Not sure if mine has a ballast resistor, is it supposed to?

#11 BlindSight

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Posted 06 July 2012 - 03:12 AM

So I still can't seem to figure that section out, have everything else ready to go I believe but when I try to start the car the bottom fuse pops. I just hooked up the uncut wires to the Ignition coil , then I tried hooking up the other black wire with a red stripe as well and still the same thing. suggestions?

Edited by BlindSight, 07 July 2012 - 10:46 AM.


#12 talldude

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Posted 06 July 2012 - 09:00 AM

If your truck has points, you need the ballast resistor (the big while ceramic block mounted on or near your coil). If you have electronic ignition (little module inside your distributor) then you don't need it. I'll try to find my schematic and fill in the gaps. Try to find a Mitchell or Subaru schematic for your specific year; it might help.

#13 BlindSight

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Posted 06 July 2012 - 12:02 PM

Thanks, it has a distributor and the 3 schematics I have all only show a black with red stripe and yellow wire.

#14 BlindSight

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Posted 07 July 2012 - 10:46 AM

Still no look finding anything or anyone who knows where these go or how to fix my problem. Any ideas would be greatly appreciated!

#15 BlindSight

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Posted 07 July 2012 - 06:11 PM

Alright so I think I have it figured out...the new harness is from a 78 which had a points distributor which my car does not, the extra black with red stripe and black wire are supposed to go to a ballast resistor which my car doesn't have so im going to order one and see if that fixes the problem. Will it matter that I put this on a car with a non-points system? I did a bunch of research and found that my ignition coil is the ND model so looking at a 1.4 ohm resistor. If anyone sees any issues let me know. Thanks!

#16 BlindSight

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Posted 09 July 2012 - 12:33 PM

annnnyone?

#17 BlindSight

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Posted 11 July 2012 - 09:03 PM

Anyone? it still wont crank, pops the bottom 25A fuse when I try. Looked through three different wiring diagrams and a few dozen fuses trying different things and im about ready to set this thing on fire.

#18 BlindSight

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Posted 12 July 2012 - 04:01 PM

Got it cranking finally, just can't get it to run but its been sitting a few months so should be able to figure it out. Thanks!

#19 moosens

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Posted 13 July 2012 - 02:49 PM

How long does it run for? Idle ok?

#20 BlindSight

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Posted 16 July 2012 - 11:48 AM

It will start for maybe a second before it dies, have tried pouring some gas in the carb, using starting fluid, no dice.

#21 BlindSight

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Posted 16 July 2012 - 05:01 PM

Just for kicks I connected my new ballast resistor (car originally didn't come with one but the new harness from the older model has the wires for it.....and now it runs! Well its getting really hot and boiling in the reservoir but im hoping its just the electric fan is worn out and cutting on and off.




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