Harbor Freight Wire

[Zmanco]

About 3 months ago I switched to FI and built my own wiring harness. I used some wire I had left over from other projects but mostly used wire from a package deal I found at Harbor Freight. Last night I swapped fuel injectors and this was the first time I had to deal with any of the wiring under the hood. I found that HF wire is already getting very stiff due to the heat the insulation has experienced under the hood. I'm not worried (yet), but it was far more brittle after 3 months than the stock wiring is after 34 years.

 

I think the HF wire is probably fine for general use, but for high temp applications it's a poor choice. FWIW, the blue appears to have suffered more than the white.

 

It's too early to predict if this will become a problem for me over time, but in hind sight, I wish I had used a higher quality wire. "You get what you pay for" continues to be true.

[z-ya]

For the injector wires on non-webbed manifolds, Teflon coated wire is the best. Put the HF wire in some plastic conduit to protect it from heat.

[2003z]

anything from harbor freight is one time use only.

[Nismo280zEd]

I've even melted the plastic conduit under the hood, route your wires away from the heat, use some shielding and a good "sheath" to protect your wires.