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12v Electrical Problems

I need help finding a 90A breaker or what ever it is called.  On drawing # b-2126 it just shows a round circle with 2 wires.  One wire is #430 large red wire that goes to my in Ignition solenoid.  The other drawing I have is b-2099.  I have no power to head lights, ignition solenoid, ignition switch.  On one drawing it shows that the 430 wire goes to the isolator on terminal 4.  I checked it and it has 12v on it.  I drove the MH the other day to fill with propane.  Drove fine with no problems until this morning when I tried to start the engine.  Generator starts and works fine.  Both sets of batteries are charged and up. 

Pat
Pat/Blue Angel
1995 U240 36ft
MC# 16511
Build# 4653

Re: 12v Electrical Problems

Reply #1 –
Pat,

That may be the resettable one. Look on the backside of the wall it is mounted on and see if there is a hole in the wall. Look and see if there is a button inside that hole. Push same and see if you are back in business.

Mike
Pamela & Mike 97 U 320

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

Re: 12v Electrical Problems

Reply #2 –
IIRC, it is in the rear-most compartment on the passenger side.  Behind the fiberglass cover on the forward wall.
Dave and Kelli
1997 U295 40' Build #5188 CSGI
1995 U240 36' Build #4621 SBID-SOLD
2006 Jeep Wrangler Rubicon

Re: 12v Electrical Problems

Reply #3 –
On our U280 the 12V panel is in the big center storage bay, aft wall, driver side.  White fiberglass cover.  Remove cover and the 3 round black things at the top are the 90A circuit breakers.

On our coach, the one on the LEFT is feeding the ignition solenoid.  This is an auto reset breaker.

On our coach, the one in the middle is the manual reset breaker, with hole in the wall behind it to access the reset button.

1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: 12v Electrical Problems

Reply #4 –
I found a breaker on my isolation board.  One wire comes from the forth(4) terminal.  I have checked with a test light and the forth terminal has voltage and the breaker has voltage on both terminals.  I am lost now.  I wonder if after the breaker the wire also goes some where before it get to the ignition solenoid ,

Thanks Mike, Chuck, Dave for the help.
Pat
Pat/Blue Angel
1995 U240 36ft
MC# 16511
Build# 4653

Re: 12v Electrical Problems

Reply #5 –
Update:
  I found the panel Chuck spoke about.  Mine is on the forward wall of the bay just in front of the passenger rear wheels.  No problem with the panel.  I have power on all breakers.  So I lowered the cover on the wire tunnel in the other bays going forward.  I looked at the red wires(4ga ones) going forward.  At the rear wall of the front bay(fuel & propane), I found that a rat had chewed the #430 wire into.  I have ordered/bought 2' of 4ga red wire($7), 4 copper butt splices($17), HF lug crimp tool($80).  I have doubled checked the fix with jumper cable from 90amp breaker to end of cut wire going to dash.  Its all good, everything works.

Pat
Pat/Blue Angel
1995 U240 36ft
MC# 16511
Build# 4653
 

Re: 12v Electrical Problems

Reply #6 –
Quote from: pthurman48 –
At the rear wall of the front bay(fuel & propane), I found that a rat had chewed the #430 wire into.
Rats are nasty destructive little curs.  We had one get into our coach through the propane bay.  Caused considerable damage.  If you have the open vent opening in the floor of your propane bay, I suggest you make a "rat proof" cover.  I used some expanded metal mesh (available at Lowes/HD) cut to size, painted white, and secured with screws.  One less possible RAT entry point!

(Ignore the red arrow in the photo - it was added for a post on another subject)

1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"