Bobcat 430 ZHS no aux to thumb

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430 ZHS

New member
Joined
Oct 9, 2025
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1
Tractor
1Greeds3
New here. I have lost aux function to the thumb. Aux indicator light will not illuminate unless I unplug the aux wiring to the RH joystick (code 12-22)
I have checked everything I can think of; valve/coils, RH joystick, controller, fuses, relays and every harness I can see..
Everything works EXCEPT the thumb. It just stopped one day.

The only thing I am unsure of is the controller wiring inside has one dark wire that could be burnt.

Any suggestions would be greatly appreciated IMG_8609.jpeg
 

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