Cms fuse?

[wecruz]

Does anyone know if there is a fuse that goes to the cms, mine is a 1988 royal

My warning light fuel gauge and clock are all out.

Thanks allen

[Flyinfool]

Does the voltmeter in the dash work? Voltmeter is on the same fuse.

 

Sounds more like it could be a ground issue.

[dingy]

Does anyone know if there is a fuse that goes to the cms, mine is a 1988 royal

My warning light fuel gauge and clock are all out.

Thanks allen

Signal fuse, only 20 amp one on the 86-93's

 

Horns, tach, volt thermo, CMU all run on this fuse.

 

Gary

[wecruz]

any guesses where this ground issue might occur?

[dingy]

any guesses where this ground issue might occur?

 

Not really. Ground gremlins are very sneaky.

 

Gary

[dacheedah]

put in a test ground, spike the wire at each connector, if it works at the device move back until it doesn't and you have isolated that. I would check fuse and the serviceability of the fuse holder first.

[wecruz]

where is the fuse located?

[wecruz]

used a test light and found there is ground in the large plug on the back of the cms

Edited June 2, 2013 by wecruz

[Squidley]

Try unplugging the wire harness from the back of the dash and look at the connectors. Look for obvious corrosion and broken wires/spades. Let us know how it looks, electrical gremlins suck!

[wecruz]

plugs and terminals all looked like brand new as well as the boards....

[Rocket]

plugs and terminals all looked like brand new as well as the boards....

 

Check for cracks on the solder joints, on the backside of the CMS plug terminal. These were known for cold solder joints, just like the CLASS Controller, in the right fairing. Check the tech library, for instructions, to fix these issues.