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  1. R

    LMTV - Brake lights stopped working (Troubleshooing) Follow-Along

    I have put together test lights and used meters that have the continuity buzzer that I hook up thru the shorted circuit. Then I start moving wiring, separating, pushing pulling tapping while looking/listening for any indication of a change in the circuit from the tester to get me closer to the...
  2. R

    LMTV - Brake lights stopped working (Troubleshooing) Follow-Along

    Well if you remove K6, and disconnect the brake switch terminals, you should measure 12V on pin 86 of the relay socket and you should see no path to ground on pin 85 Of the K6 relay socket. If you do it is shorted… I think that wire follows the bundle along behind the heater…
  3. R

    LMTV - Brake lights stopped working (Troubleshooing) Follow-Along

    No there are 2 ways to control a relay. Connect one side of the coil to ground and switch power on and off to the other side of the coil to control current flow, or connect one side to power and switch the path to ground on and off to control current flow thru the coil. K6 is a ground switch...
  4. R

    LMTV - Brake lights stopped working (Troubleshooing) Follow-Along

    That is correct. Of the 4 connections on the switches, 2 should go to ground and the other 2 should go to K6 pin 85. Since they are spliced together and only one wire for each wire actually makes the journey across the dash to the ground terminal buss and the relay, I would be looking for a...
  5. R

    LMTV - Brake lights stopped working (Troubleshooing) Follow-Along

    If you pull relay K6 out of the panel do your brake lights go out?
  6. R

    LMTV - Brake lights stopped working (Troubleshooing) Follow-Along

    K6 is the stop relay in the power panel…. CB76 is a circuit breaker…. If you are measuring ground on all 4 brake switch terminals(only 2 connect to ground), you probably have a short in your dash wiring between the switches and relay K6. That path to ground is keeping K6 energized and the...
  7. R

    LMTV - Brake lights stopped working (Troubleshooing) Follow-Along

    Brake lights get prime 12v power from the main switch. It has to be on to power K6. with the main sw on you should see 12v on one terminal of the brake light switches. It flows from switch, past K2, thru CB76, thru the coil of K6 to the brake switches.
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