Proheat T-II - Manual (Page 8)

6
Optional Backlighting Connections
The gray Timer wire can be connected to any
key switched power source so the Backlighting
will be on anytime the key switch is on.
Other Heater Connections
If the Timer is connected to a heater which does
not have an operational signal wire, then the
white Timer wire must be jumpered to the green
“ON signal” wire in order for the Timer’s red “ON”
LED to light. No codes will be displayed if the
Timer is wired in this manner.