Transmission light and warning light on.

[KC743]

I have a 1989 743 with V2203. The auxiliary control valve O-rings were leaking. Had a mobile mechanic help me with that repair. Leak has been fixed. Started and transmission light came on and warning siren. Check all fluids and good. Hydro filter recently changed as well as all hydro fluid. Looked in belly and noticed a wire lead off. Determined it went to a brass tab on the hydro low charge pressure switch that had been broken off during the last repair magically. Ordered a replacement, installed and attached wire lead. Still a warning light and siren. Everything operates as it should. Motors are not whining. Any suggestions would be great. Thank you in advance. Brandon in KC.

 

[Tazza]

Check the temperature sender wire near the control block, as you were working near there, it may have been damaged. Trace the wire from the charge pressure sender on the pump, there will be another wire going near the control block.
If in doubt, hook up a manual gauge to the charge pressure port on the pump and see what you get.