Quote:
Originally Posted by ducked
It is also the only circuit that shows continuity-to-earth on both halves of the circuit with the fuse removed.
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What is meant by this? With the fuse removed are you measuring continuity to common ground on both fuse terminals within the fuse box? If so, that indicates that there is still something in the primary/feed side of the circuit that is shorted to ground. One side of the fuse should go directly to the battery, or possibly through a main fuse. If you're measuring a short to ground on both fuse terminals, then there's still another circuit with fuse installed that has an issue.
Regarding the turn signal switch diagram, it sounds like your car has a "Bulb Out" warning system that monitors current draw in the various bulb circuits and will provide an indication if it determines a bulb is not drawing the expected amount of current. That would be the "Open detecting circuit." The "oscillating circuit" would be the flasher, which might be electronic rather than a simple bi-metallic strip flasher. I'm not sure what the "relay driving circuit" would be, unless there was a trailer wiring circuit option as those often use relays to prevent the trailer lighting from loading the standard vehicle wiring. Using an electronic flasher and having a bulb out circuit would be pretty unusual for a 1986 economy vehicle.
Do you have a link to the wiring diagram you are referring to that shows 3 capacitors that you can share?
-Rod