76 Duster 318, a few issues...

In my 64ragtop with the seats out, lying on my back and working on the dash wiring wasn't too awful. Sure seemed easier than pulling the windshield. The '64 Factory Shop Manual has some excellent drawings of the wiper mechanism, I would think your manual would have the same. (you do have a F.S.M. don't you?) My wiring was so hacked up and falling apart that I just bought new reproduction harnesses from Year One. Came with a new fuse box, too. If you're gonna add electrical/electronic parts (subwoofers, etc) You might think of a kit from Ron Francis, Painless - there are several more. Your stock fuse box and wiring could well have been destroyed by high amp accessories added on to the stock wiring. X2 on pictures, they'll make it lots easier to make recommendations.

ATB

BC