2005 Alpine Coach - 36' FDDS
All top rear marker light are out . I pulled 1 bulb and it is OK. The Vansco Rear VMM chart shows output 8 as "Marker Lamps Rear 1" and output 9 as "Marker Lamps Rear 2". Both 8 & 9 LEDS are on. Some how the top rear red marker lights are all out. I don't have a wiring diagram but I checked LED 8 is wire 1156 & LED 9 is wire 268. Looking for a FIX (for the lights, not me ). I don't know when or why they all went out.
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Over 90% of 12V issues are the result of poor/missing ground. That's where I'd begin. Run a separate ground wire from one of them to your battery(s) to test the ground circuit. This separate ground wire may be used to test for 12V at the lights.
If poor/missing ground is the problem, then you get to begin tracking down the bad connection, or just make that temporary ground permanent, as you choose.
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2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA." My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
Thanks. I was hoping someone had a wiring diagram and/or could tell me where the positive wire is routed. I'll check it out as you suggest - when it gets warmer.
. I pulled 1 bulb and it is OK. The Vansco Rear VMM chart shows output 8 as "Marker Lamps Rear 1" and output 9 as "Marker Lamps Rear 2". Both 8 & 9 LEDS are on. Some how the top rear red marker lights are all out. I don't have a wiring diagram but I checked LED 8 is wire 1156 & LED 9 is wire 268. Looking for a FIX (for the lights, not me 
). I don't know when or why they all went out.
Linear Mode
