You need to do some simple testing before you know what is wrong. My reaction is not distortion or bad switch, but testing should give a clue.
1. Test the switch with no wires attached. I.E. Test for continuity (non voltage test). Should read: sw off= no continuity between any terminal to another and no continuity between any terminal and sw case.
Sw on= continuity to any two terminals but no continuity between any terminal and sw case.
2. Please provide switch and bracket part numbers and vendor. Provide pix of switch mounted to bracket.
3. "(just digital meter millivolts)". If you applied battery voltage to a terminal and are reading the other terminals, you are reading battery voltage not "meter voltage". Explain the tests you did..... where were black and red probes touching when you got only "millivolts" and where were they touching when you got normal results. Also, What mode was meter set to?
4. Please carefully answer all questions and report test results before doing anything else. Wait for next tests.
Last edited by bartamos; 01/02/2025 12:38 AM. Reason: clarification
