Yes I agree,but I checked the switch with an ohmmeter and both circuits operate properly.The test LED stays on whether the switch is connected or not.
There should not be power in pin 5 but I have 12 volt reading.
I am presently backtracking the wiring(with diagram) and trying to find where/what the power source is.
There is obviously a short.
Car was parked for summer and I have had previous problems with mice getting in and causing havoc!!!,although I have no signs to date.)
Peril of country living.