Snap On MW120 MIG Welder

Just for the fun of it, hold the very end of the machine insert to the positive on a 12 volt battery. Then take a test light from the negative on that battery, touch the test light pointer to the copper welding tip on the tweeko gun.

Basically want to see if it is carrying a good 12 volts and a bright test light. If the test light is glowing orange, there is a poor connection in that welding lead.

Could possibly do the same test with an Ohm meter. Like testing a spark plug wire to see if it is getting full juice or has a leak.