D6H Question about dash light

[Auctioneerhere]

After a thorough cleaning, my light for the "Power Train Temp" has decided to come on & not go off.

I had steamed cleaned the machine thoroughly and may have knocked a wire loose. I do not have a book to tell me where this wire goes to a sensor to check. It is not the end of the world, but at the same time I would like to fix it while I have the side curtains off of it.

 

[Mark250]

Hi,serial number please here is best guess ,top drawing is schematic of ems light switch ,temp gauge and filter bypass switch
next photo is filter bypass switch for light
last photo is (round circle) ems temp light switch on converter outlet valve, (rectangle) is wiring going to temp gauge sender around the back of converter out let valve usually in the block fitting to trans cooler
Mark