My speciality is wiring and I can tell that it's a big job if you're talking about the main harness on that vehicle.I'd try going back to the do it yourself auto wreckers and pulling a couple of those harness's off bec you gain so much by doing the hands on job.
I'am not sure just why you want to change this harness maybe it's bec of faulty wiring or a accident that crimped the harness but keep in mind that Dodge uses quite a bit of thin gauged wires and on a vehicle that old it have many bad grounds and wiring that is internally rotted out or corroded.
Basically to pull a harness off if it's the main harness will take 2 to 3 hrs or so but to install it will take a good part of a day unless it's easy access etc.
Hope that helps and best of luck.By the way if you do know how to solder and replace wiring I'd highly recommend taking an harness off a vehicle exactly like yours and buying the right gauged wires then rebuilding the harness before changing it with your old harness , unless you're going to buy a new harness that is about 1,500 to 2,000 bucks.
What I do is take the coating or sleeves etc off the harness and then tracing the wires one ata time cutting one end of it then the other , peeling the wires then use a ohms meter to be sure it's the right way , then peel the wire you wish to change and slide the heat shrink tubes over it then peel a new wire same gauge and add it onto the old wires , then solder the connections , check both soldered ends with ohms meter to be sure it's a good solid connection and then slide the tube over the wire once it cooled down a bit and shrink the tube by heating it up, plus check where the wires connect to on the harness like a plug in pin connector's pins to be sure its all connecting properly.This method may take some time over 8 hrs or even a few days but at least then you know that the wiring will be basically new.Where do I find fenders for my old Dodge truck? And how bad is a wiring harness replacement?Yw let me know what happens pl and you've not even said what harness it is or whats the problem but I suspected its a harness by the fender lol
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Where do I find fenders for my old Dodge truck? And how bad is a wiring harness replacement?call 800-558-7750 browns of two rivers collision parts. see if they have them or can get them.Where do I find fenders for my old Dodge truck? And how bad is a wiring harness replacement?well the wiring harness wont be so bad since there isn't that many wires to deal with.though you could always add in aftermarket options like power windows/locks which will make it a little more complicated. but in so far as fenders have you tried year one? or j.c whitney.they usually have those parts or can get themWhere do I find fenders for my old Dodge truck? And how bad is a wiring harness replacement?You might try Autobody Specialties or Sherman and Associates for the fenders, maybe, maybe JC Whitney, Year One for wiring harness.Haynes manuals have pretty good wiring diagrams. Year One advertises easy installation with their wiring which is labeled, don't know if they have harnesses for trucks but asking doesn't cost anything. Truck harnesses were very similar for many years, might try your local Chrysler dealer.
Wiring on the older models is pretty simple, but time consuming to change out.
