How To Solder Car Electrical Wires

If youre the belt-and-suspenders sort you can solder after crimping.

How to solder car electrical wires. Wrap one or two inches of solder around the tip while the iron is cold. Soldering temperature is lower for this product than some lead free solders. The solder should be fed into the cool side away from the heat which allows it to be drawn in smoothly by the heat transfer through the wires.

The wire should be saturated in solder now. Run the tip of the solder on top of the wire so it melts into the wires. Make sure that you make the twisting really tight.

Review the materials needed and learn a few easy soldering methods. Outer diameter of single core wire. The most reliable way of joining two wires together is by soldering.

The 06mm wire is a perfect size for electrical repairs joining wires to connectors and general electronic circuit board assembly. This solder melts at about 370 F. Just make sure you use the right size for the wire.

Electrical tape is OK but most people dont use good-quality tape. I have tried to get the solder to attach to the wire with and without flux but no luck. Due to the high level of vibration found in automotive applications a proper solder joint it less ideal than a proper crimp joint For the same reason soldering isnt ideal in an automotive application wire nuts or just twisting the wires together is equally bad.

This is similar to the Westinghouse Split connection but you solder the connection for better connectivity and reliability. For this example connect a piece of 18 AWG wire to a pre-existing 18 AWG wire. I do this until it is flat smooth puddle of shiny solder on the top.