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Topic: Need Help 99 U270 Popping brake lite breaker (Read 555 times) previous topic - next topic

Need Help 99 U270 Popping brake lite breaker

I just noticed when I apply the brakes it is popping the brake light circuit breaker.  I am looking for most likely place to look.  Does anyone know where the plug is located near the rear, so maybe I can unplug to see if the problem is behind or in front of it.
About a year ago I had FT do headlight and tail light mod.  I noticed on last trip rt back up light inop.  Today I noticed rt brake light dim, so I have swapped both bulbs problem remains on rt. Side.
Thanks in advance.  Trying to get ready for trip on Saturday
Jerry & Nanci
1999 U270 34'WTFI
2011 Malibu
A smart man knows what to say, a wise man knows when to say it.

Re: Need Help 99 U270 Popping brake lite breaker

Reply #1 –
If not a bad breaker, most likely not, I would look for a loose wire on the circuit, posibly at the breaker, causing a higher amp draw, tripping the breaker.  I believe my breaker is in a drivers side mid bay behind a fiberglass cover, is that where yours is located?
97 U295 40, Build #5040, 6C8.3 325 HP
Oregon Continuous Traveler
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Xantrex SW2012, (3)AGM8D Hse, (2)AGM Grp24 Eng, Victron BMV-712, 1800w Solar 4 LG & 2 Sunpower
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Prev: 1990 Barth, 10L 300 2 yrs; 91&92 Monaco Signature, 10 yrs, 10L C 300 &  6C8.3 300; 1997 ForeT 6C8.3 325 since May 2017.  Employed by Guaranty RV 14+ yrs.  Former VW New Car Dlr/Service Dlr, Sales Mgr, Rv Sales, and Service Adviser from 1968-2017
"Don't criticize what you can't understand" Bob Dylan

Re: Need Help 99 U270 Popping brake lite breaker

Reply #2 –
Thanks Jack.  I am hoping someone can help me save some time locating the plug location closer to the rear so I can unplug it thus letting me know the problem is either in front or in back of that location.  No, my breaker is in the panel by the front door.
Jerry & Nanci
1999 U270 34'WTFI
2011 Malibu
A smart man knows what to say, a wise man knows when to say it.

Re: Need Help 99 U270 Popping brake lite breaker

Reply #3 –
I don't think that there is a plug there to unplug. If the right side is dim that might be the place to start.
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins

Re: Need Help 99 U270 Popping brake lite breaker

Reply #4 –
Jerry,

Take the trailer/toad wiring plug apart and see if some of the wires are frayed causing it to short out.  You also need to check the trailer  light converter magic box to see if it has gave up the ghost. Either one can cause some of your symptoms.

Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: Need Help 99 U270 Popping brake lite breaker

Reply #5 –
Mike,
I question the magic box.  I don't have a print but I cut the red wire hoping to remove power but it made no difference.  I will take the toad plug apart in the AM and look at that. 
Ron,  I agree on looking at the right side, was wondering is the wiring to rt. brake light ran from front or do they separate at the rear of coach.
I know the brake switches under the dash is not the problem.  I checked those.
Thanks again for all the help.
Also is that magic box something that is readily available?
Jerry & Nanci
1999 U270 34'WTFI
2011 Malibu
A smart man knows what to say, a wise man knows when to say it.

Re: Need Help 99 U270 Popping brake lite breaker

Reply #6 –

Yes, no problem finding one: Amazon.com: Roadmaster 732 Brite-Lite 3-to-2 Wiring Converter: Automotive

As an Amazon Associate Foretravel Owners' Forum earns from qualifying purchases.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Need Help 99 U270 Popping brake lite breaker

Reply #8 –
Check the ground strap at the suspect light area.
 

Re: Need Help 99 U270 Popping brake lite breaker - PROBLEM FOUND

Reply #9 –
Mike gets the prize!! I have a saying, Look at the last thing worked on!!  Wed. evening I replaced the trailer/toad plug HOUSING.  I had a problem with the lights not staying on and found that the housing had a small amount of wear - enough to allow for a bad connection.  I didn't have the center part so I changed only the housing.  Turns out they are not all exactly the same.  I pulled the center wiring part out of the housing and my problem was gone.
I want to thank everyone for their help.  Never seen a better forum period.  This is a good group always respectful and helpful.
Jerry
Jerry & Nanci
1999 U270 34'WTFI
2011 Malibu
A smart man knows what to say, a wise man knows when to say it.