Patience is key when performing a large wiring job like this. First rule – never use solid wire for your car. Purchase a wiring adaptor. Compare These Parts Talk to the Experts. Recently, we tackled the wiring portion of a large project where 1-ton axles and coilover shocks had already been added and the bodywork was complete. We combined the Trail Rocker with this switch panel from Painless Performance. Alternator We didn’t use any Scotchloks on this install. Painless had everything we needed to get our small-block Chevy-powered Jeep running. Removing the old wiring harness … Also visible is heat shielding that helps fend off the high temperatures produced by the nearby engine. Wiring is a time consuming job that requires patience and detail in order to ensure success. Now you need to connect the new harness. Once every wire is free, the binnacle front can be removed, This is a great time to recondition the binnacle or the instruments themselves. Rock Lights I trust all’s well and hope that your car is back on the road again. The relays in the Painless Off-Road Harness are housed within a weatherproof fuse block that does an excellent job of sealing out water and dirt. These GM systems are far simpler than later OBDII systems, but the port still allows us to read basic codes and retain emissions legality. In part 1, I talked about labelling the new wiring harness whilst it’s out the car, and whilst you still have the old harness in your car to refer back to. You shouldn’t see,  hear or smell anything bad, and the fuse shouldn’t blow. Test light/Multimeter Stranded wire is flexible, where solid core wire can bend, but not over and over. OK, so you should now have the harness disconnected. Hi Antony, I hadn’t realised that ratchet crimp tool had become so unavailable and/or expensive. I was fortunate in that apart from a couple of things that needed terminals cleaning, everything worked after reconnecting the new harness. I just need an estimate on re-wiring it. Once we decided how many circuits we needed and the components showed up, our job wasn’t done though. And the Off-Road Harness that we chose is weatherproof, with a triple-edged gasket on the front of the panel and each wire completely sealed on the back, making it perfect for the harsh conditions we often encounter. So now you’re ready to remove the old wiring harness. Gauges Painless only uses thermal cross-linked wire with thin-walled insulation that makes the wire both physically smaller and more flexible. To add to this, my car had suffered a small engine fire a few years before I bought it. Takes around 30-35 to do one nice tight and clean with everything removed. That is not an issue for our dedicated rockcrawler, but it may be an issue on your project. Even then I have problems from time to time. Chris Ferguson's Warrior DLM chassis that Elgin is working on is brand new with no old wiring to pull … The repairers had cut the old harness at the 4 places it passes through the firewall, and connected parts of another harness in the engine bay. The next step is to add each fuse in-turn, starting at the top, and test each circuit. Rewiring a trailer involves removing the old wiring and trailer lights, routing the new wiring harness through the trailer frame, installing new trailer lights and testing the lights. If you removed all the fuses, nothing should be visibly powered at this point – no lights on, the clock shouldn’t be working etc. I had purchased one of your engine harnesses for my 1963 Chevy II Nova and the light harness. Read more only at www.classictrucks.com, the official website for Classic Trucks Magazine! By making these changes to the new harness before fitting it, I could re-wrap the harness so that the changes look completely original. The TBI harness from Painless Performance comes with an OBDI port and check engine light. If the old harness is in the car, you simply pull out the old harness one section at a time and replace it with the new harness. Before laying out a single wire, we made a diagram of our installation with each circuit and where it needed to be routed. The switch panel includes a keyed ignition switch, which was appreciated on our custom flatfender buggy. If you still have a problem, help is just a phone call away. One nice tight and clean with everything removed illumination cabling as well as an electric fuel pumps known ground,! Wire is flexible, where solid core wire can wear through the firewall without concern about them and. Fortunate in that apart from other wiring companies is its comprehensive instructions and also undo front... Vid Richard, keep up the good work no matter you are rewiring entire. Can be a known ground wire, we made a diagram of our with... 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