So a common problem with our 1sr gens is the wiring harness. Some idiot at Dodge decided to wrap all the solder points in the harness with hockey tape. Hockey tape holds in moisture. Not a smart idea. I just bought my 93 4x4 5.2 auto. Has 200k on it and has been used as a farm truck. Truck wouldn't start, fuel pump wouldn't come on. It was dead. After reading on the forums about the splices that go bad I started opening up the harness. Fixed the red/white wires, fixed the blue/yellow wires. Still nothing. Opened up the computer, the short in my harness had blown one of the fuses clean off the board of the pcm. So I got another pcm coming. But while I'm waiting I decided to completely pull out the harnesses. It took 2 days and 150ft of electrical tape but my harness is now completely fixed, all the solder joints have been re done properly and heat shrinked. The harness is weather tight too so no more moisture or corrosion problems. Made sure I remade all the ground connections that attatch to the engine firewall and fenders. They were all super corroded. It took about 3 hours total to remove both harnesses from the engine bay. Another couple hours to remove all of the old tape and Mark all of the splices. There was probably 20 splices in total, 6 or 7 were bad, the rest were good but needed to be taped up. Heat shrink tape would've been better to use but none of my local stores carry it. So I used regular electrical tape, wrapped it very tight with a 50 percent overlap. Make sure you clean the whole harness with hot soapy water to remove oil, old gas, and any salt and dirt on the wires. Blow out all the connectors the let the harness sit in the sun for a while to make sure it's dry. By now we all know about the wiring issues in these trucks. This may have been a weekend project but I can't see any reason why it's not worth it. Too many positives to doing it this way vs. just fixing the same spot on the harness over n over again. Now I know I'll be able to take the truck through any weather and terrain then drive it 100 miles and never have to worry about whether or not the wiring is going to die on me.

 

I redid my harness on my 90. Sorry you used electrical tape. It's going to be a gooey mess after the first time the engine gets warm. Amazon sells the proper wire harness tape...you want the friction style with no adhesive. I do commend you on the use of Solder joints and heat shrink!

Here's a writeup I did: https://dodgeforum.com/forum/1st-gen...version-2.html

 

harbor freight sells friction tape. Its cloth but it does not hold water. It lets any water that gets in evaporate and with the engine heat.....

 

Yeah I know it wasn't the best choice using the electrical tape. Harbor freight is almost an hour drive from me. I've got a complete 1993 parts truck that is exactly the same as my truck except the color. I'll rebuild the harnesses off that one in the future and swap them over. This was just a temporary fix that I only need to last 2 or 3 months.