VW Megasquirt Forum

Note that the FIdle circuit on the relay board is limited to 1.1 Amps by the polyfuse. The relay is capable of handling much more current, but the traces on the relay board are NOT. If you wish to use the FIdle relay, do not use it to drive a device that requires more than 1.1 Amps (though you can use it to drive a second relay and control much more current - like an electric fan relay)

The power on value is the setting of the port when the power is cycled to MegaSquirt® EFI Controller, before any conditions are applied. It's value is in the same sense as the triggered value, but either 0 or 1 can be active, depending on the conditional settings, the MegaSquirt® port and hardware, and the external circuit (such as a grounded or powered relay, NPN or PNP transistor, etc.). Always test to be sure you have the settings correct for your situation!

For the FIdle circuit, the trigger value is the 'same' as the LEDs, setting it to one means the FIdle pin (DB37 pin #30) will be grounded when the condition(s) is true (and grounded means that current will flow through the device you have connected, turning it 'ON'). For the other circuits, the proper trigger setting will depend on how you have wired them (which transistors, etc.), you should determine the appropriate settings directly by testing the ports.