Wiring Guru Question

[mini_mull]

One of the POs of my burb hacked up some of the main wiring harness under the hood right on the other side of the fuse block and left what appears to be a few parts to an old alarm (shock sensor and a relay). I need to repair it before it gives me any problems, which brings me to my question.

What is the best way to repair underhood wiring?
-solder and heat shring
-solder, dielectric grease and heat shrink
-solder, silicon and heat shrink
-waterproof 3M heat shrink crimp connectors

I'm thinking the second or third option, but I have no experience, so what do you wiring gurus think?

 

[JEBSR]

I use option one

 

[nad]

Twist them together and electrical tape That's usually what I do.

But yeah, in your case, option 1 sounds best.

 

[mxfireman]

X's 3 on option 1.

 

[bigblock72]

I'm going to go against the grain on this one. I usually don't like to solder wires in a high vibration environment as the wires tend to break at the edge of the solder. This is one of the few cases where the easy way is actually the best way. I prefer uninsulated crimp connectors and good heatshrink tube that has glue/sealer inside of them. The tube can be a little hard to find but is worth the time and expense if you really want a permanent fix.

Some may not believe me but look at any newer wiring harness. You will not find any solder anywhere, all splices are crimped and heatshrinked. All the connectors for critical computer circuits aren't soldered but crimped.

It's not a good idea to use silicone on electrical wiring it can actually corrode the wire as it cures.