I have a 1971 Dodge Challenger convertible that I have been working on. It has not been driven for 20+ years. I have realized I need to replace all of the wiring. It is having to many electrical problems and it just seems safer. My question is this: Will the Year One harnesses be complete? Will I have to do modifications to get the power top, auto trans, and AC working? I need pretty much all the harnesses except the rear one because I already have replaced that one. How difficult is it to replace the dash harness?

Thanks
Sanman

For the most part the harnesses are complete. They sometimes can be missing things like the center colsole harness or dome light harness because they are ad ons to the "main" harness. I have talked to the manufactures (M&H) and was told that they can make just about anything you need if they don't have it listed.

My dash harness was plug and play.

I used a full set and they are good quality and complete. As posted above, harnesses for some of the optional accessories are add ons you have to order separatly from the main harness. The dash harness is straight forward, just tedious. Take lots of pics and/or make sketches of wire routing, accessory harness connection points and clamp points before you pull the old one out. A FSM helps a lot also. I kept the old harness together as much as possible when I pulled it out and hung it on a wall for reference as I put the new one in. On my model there are two connection blocks to power accessories - on switched and one live all the time. I mixed them up and hooked the AC control up to the un-switched block... and wondered why my battery sometimes went down after a day or two. No problem after I got it straightened out.

If none of the aux. harnesses are available to complete your car, and you have them, contact M&H directly, your chances are good that they will not only make you a harness using your exsisting harnesses, but will often do it for free, in exchange of keeping your old harness for patterning, and if you incure the shipping charges, been done many times for individuals, and it helps M&H expand their line of applications