416b warning light / gauges

[AColeman]

I have a 93 416b the warning light is on steady and the temp, oil, fuel and trans gauges read nothing. I have gone through the whole machine with filters and fluids. I have tested the gauges and I can get them to read by grounding. Does this mean all my sending units at bad?
Thank you

 

[bill onthehill]

I would start with the ground cable at the battery. Remove it and clean it down to good bare metal where it goes to the machine. Clean the terminals good also.

 

[AColeman]

Cleaned the terminals. Got new batts in it. Any other thoughts or ideas

 

[Nige]

Is there possibly a ground somewhere from the dash panel to the machine frame..? If you want an Electrical Schematic for your machine then send me a PM with your machine Serial Number and your email address.

Also if you can, post a photo showing which warning light is on.

 

[AColeman]

Battery grounds are good and dash ground is good