I just examined my AAW engine bay wires installed in my 1965. One really large gauge red wire comes from the alternator and runs straight to the + battery lug on the starter.

A dark green wire runs straight to the horn. That means the horn relay must be part of the fuse box.

I don’t have any helpful answers yet. But I might if I pull out my AAW instructions.
Have you tried calling AAW tech? They have great customer service.
Attachments

Last edited by Lugnutz; 12/04/2020 2:28 AM.
1965 Chevy C10 Shortbed 1/2-Ton Stepside
Truck College
In the Stovebolt Gallery
In the Project Journals Forum
The Build BLOG on Weebly
T5 Transmission Build page