1970 GTO underhood harness routing
 

Still piecing together my 1970 GTO. As documented many times before, I got it as a stripped wreck with the front clip missing; the wire harnesses had been cut. I purchased new American Autowire harnesses, but I don't know the routing. I'm hoping someone out there has some clear pictures so I know where to run & clip things. Any photos appreciated!

I don't have photos of a factory harness but do have an assembly manual. Are you looking for firewall to engine, or firewall to rad support (or both)?

Both.

I have the assembly manual myself, but its a bit fuzzy hard to read....that's why I was looking for pictures!

See if these are any clearer than yours.

Chapter 12 in the 70 Service Manual has many pics of wiring routing.


:confused:

Check these out.

Those drawings are way better than mine! I bought a copy of the assembly manual off Kijiji & think it was a set of photocopies...it's really hard to read.

Thanks!!

I had one of the crappier manuals as well when I started. Pretty much useless.

Inline Tube has since been selling a higher quality version which is what these pics are from. The pages are blue instead of white.

Oh to have a nice assembly manual....said the guy with a '64! Lol

Back under the hood....

The replacement harness has 2 ground locations, One is a smaller connector, takes a sheetmetal screw. From what I could see (looking on the inter-web) it attaches to the body right by the fender mount on the firewall. Lo & behold my car had a hole there, so I assume this is correct?

Second ground is a much larger connection for a 3/8" bolt. I assume this grounds to the cylinder head or engine block?

I'm going by memory so $0.02...

The larger eyelet goes on the back of the driver side head, and the smaller one goes under one if the screws that hold down the horn relay.

Great, thanks!