Nichrome wire has a high resistance, and that’s exactly what you want in a tool that essentially shorts a battery to make heat. [Techgenie] used a momentary button instead of a switch ...

There are two approaches to installing a battery disconnect. Electrical experts say either way is valid, and point out advantages/disadvantages to each approach. Install the disconnect switch on ...

The ignition switch ... the wiring from the switch to the starter or other electrical components. Those could also be signs of other problems, such as a failed starter motor or a dead battery.