Wiring harness heat shield options (1 Viewer)

[thetoyotaman]

In doing an e-locker swap, I’ve noticed the heat shielding is in need of repair. Curious as to what others have done to repair this or other harnesses. Thanks!

 

[MoJ]

I’ve used something similar to the below on multiple cruisers over the last few decades. I originally purchased the roll from autozone. I’ve been impressed that the adhesive backing lasts and can be applied in fairly low (~40F) temps.

Design Engineering Cool Tape 1-1/2" x 15' 010408: Advance Auto Parts

 

[sbman]

I used some of this:

FIBERFRAX from Aircraft Spruce

Its a ceramic cloth. I then covered that with aluminum adhesive tape to hold the cloth on. I used that on the EGR area of the engine harness and it's been holding up well. The ceramic cloth really blocks heat well.

 

[thetoyotaman]

How many feet did you use?

 

[thatcabledude]

If it makes you feel any better, I didn't even know there was supposed to be heat shielding and my elocker swap doesn't have melted loom after many years.

 

[Rifleman]

That heat shielding serves a very important function. When i bought my truck my front diff locker wouldn't work, after lots of looking i found the problem inside that harness. The heat from the exhaust cooked the wires inside my harness causing the insulation to get brittle, and fall off. After that happened a few wires ended up breaking in two. Since that harness is NLA from Toyota, or Lexus i bought a used from a Mud member. Before i installed the replacement i took the time to strip off all the old heat insulation, and replace it with expandable fiberglass braided sleeving. The sleeving was held in place on both ends with 3M high temp glass cloth adhesive tape. Plus you can use that tape to reattach the plastic anchors to the wiring harness that hold the harness to the body, and frame. The sleeving has a temp rating of 1200 degrees, and the tape Withstands temperatures from -65°F to 450°F and intermittent temperatures up to 550°F or higher. Remember, if Mr T didn't think insulation was needed in that area , he wouldn't of spent the time, and money putting it there in the first place. Links for both of these products are at the bottom of this post.
Fiberglass Tubing, Wire Thermal Protection, Thermal Hose Protection, Thermal Protection System, Fiberglass Sleeving - CableOrganizer.com
3M™ Glass Cloth Tape 361 | 3M United States

 

[sbman]

How many feet did you use?

I didn't use much. I already had some from another project. A foot should be plenty because you'll be able to cut it into strips anyways.

 

[thetoyotaman]

Thanks for all the suggestions. They are all great options! I found some Insultherm the most economical as I was looking for a small quantity and it came today.