#5097, "RE: standalone megasquirt wiring???" In response to In response to 6 Dec-13-10 07:28 PM by CODE4
Originally posted by reborn750 ok, last few questions i hope. How many sensors need a 5v source from the 5 vref wire? TPS, Crank position, and what else? and do the 6 black ground wires from the ecu go to the grounds from the sensors or do the sensors just get grounded somewhere on the car and the ecu wires just get grounded on the car somewhere?
TPS needs 5v, from the vRef wire from the MS. Crank, Cam, & Speed Sensor use 12 volts (pull directly from ASD relay or switched 12 volt source). If you do not care about the speed sensor and are not using the cam input, then disregard connecting them. All grounds - ones from MS unit and sensors - should preferably be at a single solid chassis ground point.
Again, this information is all in the MegaSquirt manual.
