I have heavy wiring (fused +ve) running from the jump-start terminals at the front right of our '02 300M to the trunk for an amateur radio transceiver.
Mow I would like to install a relay to ensure that the transceiver has power only when the key is in the "Run" position.
Where is the most convenient point to find a terminal or conductor (either in the trunk or on the passenger side of the engine compartment) that is "hot" only when the key is in the "Run" position? If it's a conductor in a multi-wire harness, what color am I looking for?
"Perce" (aka Alan NV8A)