No Battery Voltage To Cab

[LockDoc]

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Don't know if you had the small junction block off of the inner fender by the battery and cleaned up the stud, nut and lock washer or not. The 12ga hot wire for all of the electrical power except for the starter comes from that, runs across the top of the core support, and ties into two other 12ga red wires. One of the 12ga red wires runs from that to the firewall bulkhead connector and feeds the interior electrical.

Electrical diagrams are here:

http://67-72chevytrucks.com/vboard/s...d.php?t=185856

Below the diagrams in the first two posts you will find links to larger versions that you can save to your computer and print out.

There are a lot more ground straps needed than just the battery to the chassis (i presume you mean engine). If the frame and cab are not grounded, that might cause the problem you are seeing. Read through this post....

http://67-72chevytrucks.com/vboard/s...d.php?t=422234

LockDoc

[LockDoc]

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OK I see you got it resolved by the time I posted above. Good deal! I will go ahead and leave my post up in case someone else has a similar problem and needs the links to help them out. It still might not hurt to read the ground strap thread though, it's pretty important.

LockDoc

[Getter-Done]

Originally Posted by LockDoc

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Don't know if you had the small junction block off of the inner fender by the battery and cleaned up the stud, nut and lock washer or not. The 12ga hot wire for all of the electrical power except for the starter comes from that, runs across the top of the core support, and ties into two other 12ga red wires. One of the 12ga red wires runs from that to the firewall bulkhead connector and feeds the interior electrical.

Electrical diagrams are here:

http://67-72chevytrucks.com/vboard/s...d.php?t=185856

Below the diagrams in the first two posts you will find links to larger versions that you can save to your computer and print out.

There are a lot more ground straps needed than just the battery to the chassis (i presume you mean engine). If the frame and cab are not grounded, that might cause the problem you are seeing. Read through this post....

http://67-72chevytrucks.com/vboard/s...d.php?t=422234

LockDoc

LockDoc
Thanks for that electrical diagram link.
I read thru most of it.
In post #302 there is a very clear Full diagram.
That will help when I rewire my truck.
Thanks
Dwayne

[LockDoc]

Originally Posted by Getter-Done

LockDoc
Thanks for that electrical diagram link.
I read thru most of it.
In post #302 there is a very clear Full diagram.
That will help when I rewire my truck.
Thanks
Dwayne

No problem. I remembered that the wiper wiring was wrong in the original diagrams. Here is what is wrong:

The wiper motor wiring is incorrect on the above diagrams.
The single connector is 1 black wire that goes to the wiper switch.
The yellow power wire goes to one connector (washer) and then jumpers to the wiper motor.

I don't recall if it was corrected on the files that were posted later or not.

LockDoc