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Topic: What is this for? [Switch inside dash] (Read 230 times) previous topic - next topic

What is this for? [Switch inside dash]

Does anyone know what this switch is for?
James and Suzi
1999 U320  36, Cummins M11
Build 5544  Motorcade #17268
Ronan, Montana
2020 Jeep gladiator

Re: What is this for?

Reply #1
James and Suzi,

I can't tell you specifically what that switch does, but if you do a search on the Forum for "secret switches" or similar terms you'll probably find your answer.  For instance:

secret? switches inside dash

Three switches under dash cover?
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: What is this for? [Switch inside dash]

Reply #2
Mine alters the idle speed.  Edit to add:  FT had so many variables. Try looking at the wiring schematic to trace where it goes or is named.
Jerry & Nona and Kimeru the cat that thinks she's a dog
1998 36' WTFE U320  #5314 Motorcade #17711
USAF 1975-1995
2019 Subaru Crosstrek 'toad'
2003 Subaru Legacy touring car
jerry Fincher | Flickr

Re: What is this for? [Switch inside dash]

Reply #3
A single switch inside the dash, especially if close to the tank monitor/rear camera area is potentially the switch to ground the tank monitor sensor readouts when you calibrate them.  In the link below, it's a convenience switch to momentarily ground pin 15.

https://www.foreforums.com/MGalleryItem.php?id=3455

If you still have the old Javalina pressure transducer tank sensors, don't flip that switch until you trace the wires to it or you might muck up your tank calibration and you'll have to recalibrate them (oh what fun.....  :-X  )

Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320