DC 12V distribution

FTCMCB · 07-09-2021, 07:53 AM

My 2006 FR has lights on either side of the bed, neither works. I checked the fuses at the AC/DC distribution center and all is well. I also found that the labeling is not correct for the DC loads.

Getting to the point, does anyone know where to find a diagram with wire coloring and or routing for DC distribution. I really do not want to chase the wires through the walls.

Help me please

cboss · 07-09-2021, 08:04 AM

Pull one of the lights down and check for voltage (12 vdc) on the wires.
You are probably not going to find a wiring diagram anywhere. They just don't have them.
Our DC panel labels are notorious for being wrong. Best way to figure them out is to pull one fuse at a time and see what stopped working.

FTCMCB · 07-09-2021, 08:10 AM

Thanks for responding. I did that yesterday and all the fuses are good. Sadly, that is how I determined the technician that labeled the distribution panel could not read label it correctly. All the grounds are good I checked continuity. Not trying to find a way to determine where the positive wires start to do the same.

cboss · 07-09-2021, 08:13 AM

Did you check for voltage at the lights?

FTCMCB · 07-09-2021, 08:26 AM

I pulled down both lights yesterday and found no voltage at either light. There are different colored wires for each light. The grounds wires check good for continuity to the chassis and the AC/DC distribution center. Trying to determine where the input +12VDC is distributed from and or any branches.

cboss · 07-09-2021, 08:28 AM

Just a SWAG, but is there a switch somewhere?

FTCMCB · 07-09-2021, 08:47 AM

Not that I can find. I have not checked the Battery Disconnect box fuses yet, that is on my list today

cboss · 07-09-2021, 08:49 AM

If the battery disconnect fuses are bad or open you would not have any 12 vdc power.
Do other lights in the camper work?

FTCMCB · 07-09-2021, 08:57 AM

Everything else works. I am reaching when I go to the battery disconnect. If it is not powered from the AC/DC distribution panel or the the battery disconnect, then it would have to be a chassis load.

bubbles · 07-09-2021, 09:05 AM

Just a wag. Could the wiring be under the bed instead of in the overhead?

FTCMCB · 07-09-2021, 12:15 PM

Unfortunately it goes up into the wall and then into the ceiling.

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