Upon further inspection, I found that it is the coil, not the diode. What's weird is that after sitting on my back porch all night (humidity) the relay works fine for a while, then back to no action from the coil, so as a temporary "fix" untill I replace it I used solder to make contact between two points on the circuit board, next to the pin that has constant voltage. When the coil is working correctly, and the ignition is turned to the on position, which gets juice to pin 87, it seems that one of these points is from the coil that would supply the voltage to pin 87. So I just bridged them together. I know it's just a "jerry rig", but untill I can cough up $90.00 for another relay it will have to do. Anybody know a source for relays that is cheaper than the dealer?

Thanks,
-DDaymen

If you are tight for cash.
Why don't you get one from a wrecking yard.
Their plenty there.

Regards.
aam.

Already checked out the wrecking yards, no 560sl's, but I'm sure other models use the same relay, I just don't know what they are. Funny thing happened this morning on my way to work, stopped to get coffee, turned off the ign. switch, removed key, nothing happened, the car was still running, no dash lights came on, it was like I had not turned it off or removed the key!, after inserting the key again, turning it to the run position a few times then turning off and removing, same thing, no effect. but then after driving the rest of the way to work, parking, then turning off the car, all was normal again!

Strabge things these cars can do!