[bradburm]

All,

Need to rewire my 70 Roadrunner, I am sure some of you have bought a harness for your chally's. Looking for reccomendations on where to get the harness for my 70 RR.

All help is appreciated


As always a huge Thank you

[fbernard]

I don't remember who makes them for Year-One, but they don't sell direct. Quality is good. I've seen other manufacturer's recommended too on moparts (don't remember many of those, but I found that in my Mopar shortcuts : http://www.lectriclimited.com/wiring-mopar.htm).

Year-One also carries 'modified' harnesses (using electronic ignition for pre-71 cars, and / or dual-field alternators for pre-70 cars).

There are also custom harness makers (Painless Performance, and Ron Francis Wiring), but expect to fit, cut and crimp everything yourself. Perfect if you want to add some circuits, and have a modern wiring harness, less so if you are not familiar with wiring.

Unless you're looking for absolute correctness, I'd suggest starting with a modified harness (you already have the dual field, get the electronic ignition model if that's what you have on the engine), and do the following modifications :
- install relays on the headlights,
- bypass the alternator gauge and consider bypassing the bulkhead connector, or connect the alternator output to the battery terminal of the starter relay with some heavy gauge wire (something like the Painless Performance 30709 kit).

When the time comes for installation, a good way to proceed is this :
- stick a tag around every old harness terminal before you disconnect it,
- write where it is and what it's connected to,
- disconnect it,
- lay all the old harness on a big board (wood or cardboard),
- unfold it and make sure it doesn't move (I'd use small u-shaped nails, or large staples with a staple gun on the lowest setting if you have one),
- lay the new on the old one and match every connection,
- Tag the new wires near their end so you can connect them back on the car,
- check for any differences (you may have electric-powered options that are not on the new harness, if that happens, you'll have to reuse (and maybe repair) the old harness part),
- also check for length differences, there shouldn't be any.

- Install new harness.

Make sure the tags you use won't come off. You can also use small plastic identification clips with numbers than you clip on cables, there are many ways to do this.