wait to start light

[kbacon3231]

on my 91' f-250 the wait to start light does not come on. i here the clicking of the gp controller like its working. the truck is hard to start in the cool weather. does the light not comming on mean something is not working correctly? any suggestions?

[OkieGringo]

There have been MANY posts/questions recently the about this and related stuff, please read them and use the search function. OkieGringo

[BuilderBob]

Glow plugs, all 8 GP's must be good, not 7, all 8.

The BuilderBob way is ...... hook test light to batt+ then touch the TL tip to the top of GP. Lights up, good. No light, bad.

From my cousin, Okie Gringo, his advice,
But THE NUMBER ONE thing to check is, are ALL the GPs Motorcraft, made by BERU(which is stamped on the hex part of each GP).

[cdnsarguy]

Fuse 17 is the power (cab) fuse for the WTS light, the controller is the ground when it is active. Might want to check the bulb.........