Wire insulation repair

4520BW · Sep 10, 2021

What's the best way to repair wire installation that mice have chewed up? I would just but a new harness but this goes into the injection pump.

J.Wondergem · Sep 10, 2021

Maybe some heat shrink tubes?

Fawteen · Sep 10, 2021

That'd be my approach. QUALITY (3M) heat shrink. Get the tool(s) to pop the pins out of the housing, slip some heat shrink over the wire, shrink and reassemble.

SVcummins · Sep 10, 2021

I use liquid tape

SVcummins · Sep 10, 2021

Steve@Advance · Sep 10, 2021

There should be a way to remove the terminals from the harness plug (take pictures note the colors first).

Then cut the harness cover back some to get past the damage. Remove any damaged insulation and slip heat shrink tube over each wire. Some liquid electric tape on each wire first will help seal out moisture. Messy but good stuff!

If the terminals won't come out of the harness plug, cut the harness cover a good ways back, cut the wires at varying lengths, slide the shrink tube over the wire and solder the wire back together. You'll have to cut the cover back far enough to slide the shrink tube a ways past the solder point so it doesn't heat up from the soldering. Get some large shrink tube to repair the cover. It will have to go on first.

showcrop · Sep 10, 2021

3X get the tool (or set) to release the wire connectors from the plug.

Geo-TH,In · Sep 10, 2021

I never uses this:
125ML Liquid Insulating Electrical Rubber Coat Resistant Sealant Glue Fast Fix
Brand New
$18.74Buy It Now off ebay.

DoubleO7 · Sep 10, 2021

Steve@advance has the answer.

That far off pinkish wire looks to have been exposed quite awhile.

There is also rodent resistant braided sleeving available to finish the repair.

Stephen Newell · Sep 10, 2021

Not the easiest way but the best way would be to replace the plugs. They usually come with eight to ten inches of new wire. One by one splice and solder the wires and cover with heat shrink tubing.

Duner Wi · Sep 10, 2021

If I could get the wires out of the plug a 2 layers of shrink tubing.

john in la · Sep 10, 2021

If you worried about looks follow the advice of others and use heat shrink.

If not it does not look like any of the wire is damaged just the insulation covering.
Wrap each wire with some black tape to prevent shorting and be done with it.

SparepartsTN · Sep 10, 2021

That is a fine mess they have gotten you into! I'll second that Steve@Advance has it right if you can get the wires out of the plugs or have enough length of wire to cut above. If you can't fix it either way, I would slit the rubber sleeve back enough to separate the wires, smooth them as best you can and use either electrical tape and/or the liquid electric tape in a can then recover. Advance Auto sells the 4 oz Blue Magic liquid for $10.00 a can, most auto parts stores carry it. Bought some yesterday because I didn't follow instructions and use pliers to close the can I had on the shelf, dried up.

showcrop · Sep 11, 2021

(quoted from post at 21:20:22 09/10/21) If you worried about looks follow the advice of others and use heat shrink.

If not it does not look like any of the wire is damaged just the insulation covering.
Wrap each wire with some black tape to prevent shorting and be done with it.

John, I'll bet that 4520BW has in mind to be done with it for 10 years rather than 10 months, LOL.

john in la · Sep 11, 2021

showcrop
You saying black tape will only last 10 months????

I was noticing the black tape the electric company used on my drop line was still good and its been on there over 30 years.

Gary in Indy · Sep 11, 2021

I would use heat shrink with the internal adhesive. Use one size to big, slice it length way, put it on the wire, let it wrap around itself, heat it slowly and it will seal to itself and the wire. Plus the adhesive seals out water and oil.

You can buy it pre-made its called wrap around heat shrink but cost more.

showcrop · Sep 11, 2021

(quoted from post at 05:42:47 09/11/21) showcrop
You saying black tape will only last 10 months????

I was noticing the black tape the electric company used on my drop line was still good and its been on there over 30 years.

John, you have grease and oil around your drop line?

john in la · Sep 11, 2021

showcrop
Just to amuse myself I will say.

No grease or oil on my drop line.
But it does have UV rays; sweltering heat; and even the occasional 135 mph winds.

The differance might be the electric company and me for that matter do not use harbor freight black tape.

caterpillar guy · Sep 13, 2021

SV has it. Brush on the liquid tape let dry put another coat on. Then you can fool with the shrink tube if you want. You can also then tag or label the wires. I would also let dry overnight after done.

showcrop · Sep 13, 2021

(quoted from post at 14:19:57 09/13/21) SV has it. Brush on the liquid tape let dry put another coat on. Then you can fool with the shrink tube if you want. You can also then tag or label the wires. I would also let dry overnight after done.

I have seen that liquid tape but have never tried it. I don't see how you can get even coverage over the whole area that you need. I know that doing it in two applications helps your odds of all over coverage but I see myself getting thin spots that crack two months later. Please tell.

Wire insulation repair

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