[mole2]

Originally Posted by alantf

If you look at my drawing of the circuit, you'll see that with the switch in one position, power flows throught the warning light, left to right. With the switch in the other position, power flows right to left. So where do you put the diode? :??: There's no ground terminal at the warning light.

Correct. With the kit you are putting a diode on each feed and creating a "Y" connection. This will feed the positive 12v to one side of the light socket and not backfeed on the opposite circuit. You then add a ground to the opposite side of the socket and the bulb socket acts like a plain old bulb socket.