I have a 23c and need to know how to wire the glow plugs and how long to heat them as i just got my 2nd set of them and dont want to buy any more?
I got the tractor in a basket and my book did not cover wiring.Thanks,

J & L Farms.

I have scanned the wiring diagram from the workshop manual, so that should
be of help to you.  Click on the link below to open the wiring diagram.

 Ferguson FE35 Heater Plug Wiring Diagram