Best Way To Solder Automotive Wires

With almost 30 years in the business tens of thousands of wiring harnesses sold and millions of feet of wiring they would be the people to know.

Best way to solder automotive wires. Put rosin flux on the spliced wire to help the solder adhere better. But most automotive wiring uses 12- or 14-ga. This is used to neutralize the corrosive properties of the other solution and to further clean the wires.

Soldering isnt particularly hard but it still requires heating the solder and carefully placing it between the connector and the cable. BTW the wire shown in the OP photo appear to be silver plated PTFE insulated. Solder is often a combination of mixed alloys.

Its the act of using heat via a soldering iron and a fusible metal the solder to create the electrical connection. TICONN 250 Pcs Solder Seal Wire Connectors Heat Shrink Butt Connectors Waterproof and Insulated Electrical Wire Terminals Butt Splice. These I then insert into GM Weatherpack fittings with a bit of dielectric grease on the pins.

This is often used in aerospace but is the worst for solder. This tool worked the best for me in the automotive application and make it a breeze get that tuff to reach wires repaired soldered and sealed properly. The center contains flux that cleans the surface of the wire to be soldered.

Tin the end of both wires by clamping them in your third hand jig and. For best results use a crimping tool but a pair of pliers will work in a pinch. Try to coat the wires as evenly as possible so theres a thin layer of flux on them.

The best connection is a crimp with plastic cover or a non-insulated terminal covered with a high quality heat shrink to protect the connection. Put a bead-sized amount of rosin flux on your finger and rub it over the exposed wires. Get 2 containers one for each solution.