76 wiring harness?

340fourspeedDuster said
Try calling the engineers at Painless wiring. See if they can help you.
Contact Us | Painless Performance

Here's what they sent:

I wouldn't 100% be able to list all of the differences between a '75 and '76, but since we squeeze as many years as possible into a kit (and they are very vehicle-specific) during development I wouldn't recommend trying the 510603 harness in your car. With the time spent making a harness designed for a different year range work in a car you may be better served with a universal kit like our Highway 22 or Power Plus 20.

The Highway and Power Plus kits use modern, ATO fuse panels and provide all the basic feeds required to replace the complete original chassis harness. The panel designs are somewhat different, so one may suit your needs better than the other. As with any universal harness, there would be some adaptation and instances where you would be required to reuse (or source new replacements) for things like lamp sockets. The farther from stock your car is, the less this would matter when using a universal harness.

Highway 22:

http://www.americanautowire.co m/shop/highway-22-panel-wiring -kit

This is a modular panel, so you have the ability to relocate the fuse box if you'd like to move it to a location other than under the dash. Once it's mounted, you run your wire leads from the item you're setting up back to the face of the fuse box. This can be nice if you'd like to custom route the harness, or only want to run the sections of wire that are relevant to the car.

Power Plus 20:

http://www.americanautowire.co m/shop/power-plus-20-kit

This is more of a standard underdash panel designed to mount on the driver's side of a vehicle. Like the Highway, it includes modern, pre-labeled GXL wire and will be set up for an internally regulated alternator, 12 volt ignition and 69+ GM steering column. We supply the correct mating connector and terminals for the GM column, so you'd be able to reuse your original column without issue. The one gauge we would not support would be an ammeter (this goes for our Classic Update kits as well) due to safety concerns. We recommend using a voltmeter as an alternative.

You can view the instructions for the Highway kit here and the Power Plus 20 here if you'd like to get a better feel for what's included and how they install.

Hopefully that helps get you started!