#5219, "RE: need help with megasquirt relay getting hot" In response to In response to 9
Well, something's definitely wired incorrectly. I'd take a look at the FSM and the wiring diagram supplied by whoever built the MegaSquirt ECU. Those two documents should also provide enough information for you to remove the relay board. I don't know if this wiring diagram will apply to you, but here's the FSM and one possible wiring diagram: