[Plandreth]

4 terminal ignition switch went out. What is the accessory wire for on a 4 terminal. Can it be converted to a 3 terminal switch

[porker]

Accessory wire should only power your radio, power outlet, etc. and not your engine. I am sure you could combine your accessory and run circuits together if you really wanted to convert your ignition switch to a 3 terminal, but I don't understand why you would want to do that. I recently replaced my broken 4 terminal switch with Sierra MP41040 and it was pretty much an exact match for less than $20.