wire diagram for 1999 Ford F250 diesel glow plug relay
the glow plugs are located under the valvecovers should be 8 of them
Mounted to the passenger side frt valve cover
glow plugs, glow plug relay, poor compression on engine are some things that will give problems
how locate glow plug relay on 2008 Volvo diesel 2.0D
no glow plugs
The 1991 Dodge diesel truck glow plug relay is located in the fuse box. The fuse box is located behind the battery box. The glow plug relay will be in the right upper corner of the box.
Unless your ford focus is a diesel your car does not have glow plugs.
it looks like a starter relay and its on the passager side valve cover area (powerstroke57) He is correct but be sure that you don't mistake the intake heater relay for the GP relay they are the same relay and are right next to each other. The Glow plug relay will have a orange and black wire to it that goes to the starter relay.
Inside cab, to the left of the steering column under the dash is the relay / fuse panel. On that panel is the glow plug relay.
remove your air cleaner then right behind it (closest to firewall) Is your glow plug controller! that is where the controller is for the glowplugs, but the relay switch for the glowplugs is on the passenger side of the motor. it is bolted on to the side of the fender. hope that answers your question
in the valley to the left side of the fuel filter bowl. it looks like the starter cylonoid