General Boards > Technical Support
No power for brake lights at coach 7 pin connector
Steve Huber:
Fred, Richard,
Just to be clear, your toad brake lights worked when attached to the coach until this trip??
Steve
Richard Shrode:
Yes, I have power at 3 o’clock and 9 o’clock when using the turn signals, but no power when stepping on the brake pedal.
Yes, the toad brake lights worked when attached to the coach up until this trip.
I’m assuming I am looking for a fuse or relay or converter or something that’s tripped/needs replaced… I just don’t seem to be smart enough to be able to find anything like that.
I went through fuses in the rear electric compartment and all were good and nothing else in there that looked anything like a converter.
Spent two hours at a truck repair shop yesterday with them going through fuses, relays etc. and all I left with was a lighter pocket book.
Fred Brooks:
Richard,
I was looking at the schematics on page 178, 179, and 180 and they show a relay #K4 as part of the tow wiring. I don't know where K4 is located. It may be located in the rear run panel or the front run panel. Fred
Steve Huber:
Fred,
What document are you looking at with those page #s?
There is a RC4 relay in the brake light circuit but it feeds all brake lights. RC4 indicates its in the rear cap, probably in the rear bay with the other fuses, relays, etc. If it failed you would not have any brake lights.
There is an "Aux Brake Controller" fuse, F10, on the front cap PC board. May pay to check it if you haven't already.
On my 07 Contessa the Brake light signal in the coach tow connector was at the 7 O'clock position as you looked at the connector. The signal came from the right brake light. You may want to trace that wire to see if it is tied into the brake light circuit, most probably to the rear brake light wiring.
If you can ID the pin in the Toad connector that feeds the toad brake lights/controller, you will know for sure which in the RV connector has the toad brake light signal.
Fred Brooks:
Steve,
I was in Coach assist in electrical schematics for a 2007 patriot thunder. I searched for a relay or a 3 to 2 converter but that was all I could find. Fred
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