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smlranger · 06-09-2013, 03:42 PM

I thought my LED high mount brake light was dead so removed it and checked it in my shop with a known 12 v source. It worked fine.

Back to the coach and cannot get 12v on the + wire going to that light even though the incandescent brake lights work fine in the tail light assemblies. Verified ground wire is fine. No fuses blown and I cannot find anything in the massive chassis wiring diagrams that suggest this light is on a separate circuit. All brake signals seem to come from a brake signal solenoid in the driver's outside bay. Verified good signal coming from that when brakes applied.

So, wired high mount directly to a brake light line going into the left tail light assembly and it still will not work. I don't see any diodes in any of these wires so at this point I am stumped.

trackman · 06-09-2013, 04:58 PM

You will also have to ground the high mount light to that brake light line ground wire.

jnp_macklin · 06-09-2013, 05:02 PM

Sounds like a bad ground wire is the culprit.... even after you pigtailed it off the left hand brake light.....

smlranger · 06-09-2013, 06:19 PM

Quote:

Originally Posted by jnp_macklin

Sounds like a bad ground wire is the culprit.... even after you pigtailed it off the left hand brake light.....

No, ground is solid. If I jumper the + wire on the LED light to a known 12v source in the engine bay, light works fine. My issue is getting a 12V source to it that is on the brake light circuit. What is really confusing is the wire that is connected to the brake signal relay in the front bay (clearly marked with a 4 digit number) is in the engine bay, same number. However, no voltage detected on that wire when brakes applied....but, the two brake bulbs work in the tail lights. Makes me think there is more than one circuit

Guess I'm calling Greg at CC tomorrow.

pumper9x9 · 06-10-2013, 07:27 AM

I found out the hard way that there's a seperate fuse pannel for the rear lights. Ours is under the bottom drawer below the breaker pannel in the back of the coach. I was talking to the mechanic who use to build CC and he said the engineers hide those pannels all over the place. We have a 2002 Intrigue 36'. Good luck electrical issues can drive you over the edge.

pumper9x9 · 06-10-2013, 07:30 AM

Another thougt is that you might run your power from the pig tail to the toad hook up.

smlranger · 06-10-2013, 08:49 AM

Quote:

Originally Posted by pumper9x9

Another thougt is that you might run your power from the pig tail to the toad hook up.

I did notice late yesterday a panel in the engine bay which I will inspect today. I could not locate any others inside the coach but will ask tech support at CC when I call them today.

My alternative plan is to do as you suggested; jumper a wire from the toad pig tail.

sallylillian · 06-10-2013, 11:11 AM

I have a fuse panel in the engine bay top right looking in, 2 screws hold cover. Inside are a bunch of fuses that relate to lights and the tow plug. Might be one of those?
Michael
2008 Allure 470

smlranger · 06-10-2013, 12:17 PM

Quote:

Originally Posted by sallylillian

I have a fuse panel in the engine bay top right looking in, 2 screws hold cover. Inside are a bunch of fuses that relate to lights and the tow plug. Might be one of those?
Michael
2008 Allure 470

I have same panel and will be checking that this evening. I did talk to Greg at CC and he advises there is no separate fuse or circuit for the high mount light and it is fed from the driver's side tail light assembly. On some coaches, he advises they fed it from both the left and right tail lights for redundancy. Hard to believe that both wires would have a problem.

Curious, I recently saw (last week) a 42' Allure 470 that looked just like the coach in your avatar at Tom Johnson's RV park in Concord, NC.

sallylillian · 06-10-2013, 02:00 PM

Sorry was not us. We are a 37ft Sunset Bay based in the UK, but currently in mid France en route back to the UK after touring Italy. Good luck with the fuses, I was chasing another problem when I found this panel in the engine bay, to find that some moron had replaced 2 off of the 7.5 amp fuses with 20 & 30! Probably to do with the tow plug.

Michael
2008 Allure