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Question:

can i make a repair to my wiring harness by splicing the wires together?

i think i found the reason why it melted the wires. my windsheild wipers never did work on anything but high since ive had the car so i think it was a bad wiper motor that over heated the wires then they all melted together.

Answer:

If you do splice the wires, you will do better if you solder the wire ends and use a shrink cover, which is a piece you slip over the soldered area and heat to shrink it to the wire. If you use wire connectors they can vibrate and the wire will break at the connection, and sometimes they get a corrosion inside them because most are a small aluminum sleeve that you crimp and they break also. If you are replacing the melted wire be sure you use the same size or guage wire for the splice.
of course you can splice wires in the harness to make permanent repairs.just use common sense. dont replace big wires with little wires use proper rated wire. there are some systems that require proper length and ohm rating. but i think you will be ok.
Yes, but it sounds as though you will have to splice in some wire to keep the harness long enough. The key to making a decent harness repair is to stagger the splices over enough length so the splices don't make a huge bulge. Five or six staggers should do it. You will need to bring the affected area out to where you can work with it if it is not in the open already, and that can be the hardest part of the job. Red and blue (they correspond to smaller and larger wire sizes) crimp splices are available at hardware stores, along with a proper crimp tool. Slice the cover (if there is one) for as far as you can, up to a foot on either side. Cut your add-in wire to a bunch of pieces of the same length and work on one wire at a time. When done use electrical tape to tape the cover (if any) back together and cover the gap where it was all melted. I have one other concern no wire should have a fuse so large that he wire could melt. The fuses exist to protect the wire. You will want to investigate further, I think.

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