So a kind of unique problem on my 91 Mustang. For BOTH the left and right mirrors, the switch will not activate 'down' nor will it activate 'right'. It will only go 'up' and 'left' and doesn't matter which mirror. I swapped out the lower part of the switch (the part with the four metallic pivots) with another used switch I had and no luck.
About six years ago the circuit had a big issue with three of the seven wires were nicked and or cut, as the harness somehow came loose from a clip and was shorting out on the E-brake. I spliced new wire on those three wires (good solder, jackets, etc.) and got the switch and everything working again. But recently this new problem. My continuity tester is shot, otherwise I could easily look at voltages without having to strip parts of the other four wires. Any ideas?
About six years ago the circuit had a big issue with three of the seven wires were nicked and or cut, as the harness somehow came loose from a clip and was shorting out on the E-brake. I spliced new wire on those three wires (good solder, jackets, etc.) and got the switch and everything working again. But recently this new problem. My continuity tester is shot, otherwise I could easily look at voltages without having to strip parts of the other four wires. Any ideas?