New Holland TC30 safety controller problem? With engine running, When I put the Transmission in gear the engine oil pressure, battery charge, and air cleaner restriction warning lights come on. Lights go off when I put it in neutral.Could that be a safety control problem.
Safety controller
- Thread starter Terryob
- Start date
Probably the safety controller. Look for a black/red wire coming from the START terminal of the ignition switch and going to pin 17 of the controller. After the tractor is running you could clip this wire and see if the problem goes away. You can always reconnect the wire when done with this test. Safety Controller is a PITA. About $500 for a new one 
Checked all safety switches, they’re OK. tractor will not start With ignition switch. No 12V at solenoid with key in the start position. Will start and run after shorting the solenoid. All three lights are always on now. Is there any danger in using the tractor in this condition by shorting the solenoid?
Tractor2Big4Me
New member
- Joined
- Oct 28, 2023
- Messages
- 7
- Tractor
- New Holland TN65
If anyone has a good source for safety controllers at a reasonable price, I would like to hear about it. My father-in-law has a T1520 with under 400 hours that basically still looks new. It shuts down randomly and won't restart until you power it off for a while and/or disconnect the battery for a while. Every safety switch seems OK, so I'm 99% sure it is the safety controller. The cheapest I can find is right at $500 online or $550 locally (near Lansing, MI). That is painful for a tiny box with some large power transistors in it.