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Topic: Dash electrical problem (Read 244 times) previous topic - next topic

Dash electrical problem

I have a 1999 U320.

With out head lights on, all the gages that use electricity (fuel, temp, oil pressure, etc) work fine.
With head lights and dash instrument light on.  All electrical gages increase in value. Example, fuel guage increases a 1/4 tank, instead of half full, it shows 3/4 full.
With headlights on and dash lights off, gages work as advertised.

Anyone got any idea.

Re: Dash electrical problem

Reply #1 –
Re ground all of the wires at the ground post under the dash and at the corners of the coach , to the frame.

Re: Dash electrical problem

Reply #2 –
John,

I'm pretty sure that Mike's recommendations will solve the problem.  On the other hand, leave it as is and if you ever run critically low on diesel, just turn on the lights. 

Owning a motorhome you have to keep a sense of humor. 

Richard
Jan & Richard Witt
1999 U-320  36ft WTFE
Build Number: 5478 Motorcade: 16599
2011 Jeep Wrangler Unlimited w/Air Force One
Jan: NO5U, Richard:KA5RIW
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Re: Dash electrical problem

Reply #3 –
Quote from: Protech Racing –
Re ground all of the wires at the ground post under the dash and at the corners of the coach , to the frame.

Yup, poor ground from dash instruments is the most likely suspect.
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: Dash electrical problem

Reply #4 –
mine had the same problem --I pit in a VMSPC (silver leaf) system and rarely look at the dash gauges
Chris
PS when you raise the dash cover it looks like there are 500 ground wires under there
1999 U 320 DGFE
Build Number 5523
Chris & Elka Lang
In the field, Lonoke AR