Where is this diode? Options

[andreic]

Hello,

I've been trying to diagnose why the hand brake switch does not trigger my flashing warning light in the panel on my 1972 1.7L 914. Based on my debugging the trouble seems to be with the diode that is between the flasher lights in the panel, and the switch at the hand brake. (Left diode #41 on the attached diagram.)

But for the life of me I cannot figure out where this diode is physically located. I took out the cluster gauge, and looked at the big clump of wires, and all I can see is the other diode, on the right in the diagram, that goes from the voltage indicator to the warning lights. That is there, and works fine. But where is the other one?

Thanks,
Andrei.

[andreic]

Well, I've come to believe that maybe that diode does not exist. It is not behind the gauges. My guess is that because my car was an early model 1972 (manufactured Dec. 1971), which still had the non-retractable seat belts and no seat belt waning, it had no diode. Here is the 1971 circuit diagram.

My main question now is what could make the wire have such a high resistance, in the upper 200k range. It is obviously not disconnected (since the resistance is not infinity). Where would you look for corrosion?

Thanks.