Posted 9/27/2020 21:25 (#8518579 - in reply to #8518443) Subject: RE: TR97 monitor won't power up and no power to master valve stack
Hendricks MN
The monitor should power up without oil pressure. Check the power block located by the engine under the alternator. Could be a bad breaker, broken wire, or bad connection. I can't remember for sure but I think there is a large electrical connector under the cab that could cause problems.