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Topic: Dash instrument lights problem 99 U320 (Read 640 times) previous topic - next topic

Dash instrument lights problem 99 U320

We hardly ever travel at night... but about a week ago we came home from the FMCA rally in Redmond Oregon late in the evening... and the instrument lights would come on for two seconds and then go off for 20 seconds... all but the speedometer and the tachometer... Fortunately we only had about 20 miles to go....  Very strange indeed... any suggestions as to what might be wrong?
99 U320 40ft DGFE

Re: Dash instrument lights problem 99 U320

Reply #1 –
Have experienced same, Light switch has reostat for brightness,
needs sprayed with electrical cleaner. Spray and turn switch back
forth a few times and this should take care of it.
1996 U320 Build 4922 original owner

Re: Dash instrument lights problem 99 U320

Reply #2 –
Check for lose ground wires also

  Richard B
Richard & Betty Bark & Keiko our Golden Doodle
2003 U320T 3820 PBDS
Build # 6215
MC # 16926
2016 Chevrolet Colorado 4X4 diesel

Re: Dash instrument lights problem 99 U320

Reply #3 –
 I would think that the rheostat would affect all lights as they have a common ground with others.
Strange one but yes try the grounding first.
JohnH
Coachless, now use aircraft. 2003 Ford Travelair TC280 class C. Super shape. Just for 1 yr .
1994 Ford E350 ClassC,total renovation inside and out. Now sold.
2000 U295  36' Cummins 350 c/w Banks Stinger, Resonator upgrade,Solar, LED lites.Residential fridge with slide out pantry. Build 5674. Sold
ex 92 GV 022C ored Cummins. Sold
ex 95 GV240 cat 3116. Sold
2017 Mini cooper s & 2016 land Rover LR2 HSE  LUX.
jhaygarth@aol.com    SKP #130098
treat everyone as you would like to be.

Re: Dash instrument lights problem 99 U320

Reply #4 –
Thanks for the info... I'll check it out tomorrow... I didn't know where to start looking... OB
99 U320 40ft DGFE

Re: Dash instrument lights problem 99 U320

Reply #5 –
My dash lights on my 95 became dim so I replaced it very simple. I took the one I removed and matched it at the auto parts store. They look alike but you have to match harness connection. About $25 bucks
1995 U320 40', 2013 chevy sonic toad, my real love are corvettes have owned 30

Re: Dash instrument lights problem 99 U320

Reply #6 –
Quote from: joeszeidel –
My dash lights on my 95 became dim so I replaced it very simple. I took the one I removed and matched it at the auto parts store. They look alike but you have to match harness connection. About $25 bucks

97's have electroluminescent javalena panels.  Transformer powered to my knowledge.

Lots of my ground and other dash wires loosened up over 17 years. 
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Dash instrument lights problem 99 U320

Reply #7 –
Boy I sure didn't explain myself very well what I meant to say was I replaced the light switch not the dash lights. The switch was made by GM and over time dimer on it gets old and corroded. Once replaced all dash light became nice and bright and dimming was smooth.     
1995 U320 40', 2013 chevy sonic toad, my real love are corvettes have owned 30

Re: Dash instrument lights problem 99 U320

Reply #8 –
Another strange thing happened today... I went out to try to figure out what was wrong... and all the lights were working just fine.... and I don't think I touched ANYTHING!!!! Thanks.... You guys fixed it for us... OB
99 U320 40ft DGFE

Re: Dash instrument lights problem 99 U320

Reply #9 –
Quote from: joeszeidel –
Boy I sure didn't explain myself very well what I meant to say was I replaced the light switch not the dash lights. The switch was made by GM and over time dimer on it gets old and corroded. Once replaced all dash light became nice and bright and dimming was smooth.   

Do you have the number for the gm switch?
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Dash instrument lights problem 99 U320

Reply #10 –
There was no number on the switch. I know it was gm because I retired from the truck group and the knob was gm. When I went to carquest auto parts we looked at the blade connections for the harness and matched them to one in his part switch catalog.It was a gm but I can't remember year and model. Its important to get the blade connection right that way the harness will plug right in.
1995 U320 40', 2013 chevy sonic toad, my real love are corvettes have owned 30

Re: Dash instrument lights problem 99 U320

Reply #11 –
Quote from: Caflashbob –
Do you have the number for the gm switch?
Bob,  I think it is an ACDELCO D1506A
I am on the search myself but am on the road and don't want to create a problem I as yet don't have.
Elliott & Mary Bray
ex. 1996 36' U295 - Build 4879
ex. 2018 Coachmen Leprechaun 319MB
 
 

Re: Dash instrument lights problem 99 U320

Reply #12 –
Quote from: TheBrays –
Bob,  I think it is an ACDELCO D1506A
I am on the search myself but am on the road and don't want to create a problem I as yet don't have.

Thank you
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4