no wait to start light on my 95 cummins.... i mean its 70 degrees out but shouldnt it still flash on startup?

 

is the bulb burned out?

 

i hope thats why, whats best way of checking carefully without breaking dash accidently

 

hmm if you hook up a volt meter somehow to check that circut it would tell you but i have no idea how youd hook it up

 

Wait to start means the grid heaters are in use and the temp is below the factory set temp.If the wait to start light is not functional it could mean a issue in the grid heater system or their relays.

 

unhook your IAT sensor... the light should come on or flash in the dash. atleast it does with the 89, i'd imagine it would do the same on a 95... to elaborate on what 12valvetater had said, if you get a multi meter, put it on volts and hook it up in parallel (negative lead on a good ground source, and positive lead on the back side of the grid heater), if it is fuctioning you should see source voltage, also as hammer said the system isn;t functional above a specified temp which could mean system is 100% functional; just not required to operate... and yes upon first turning the key on systems check should illuminate the wait to start light. check it out and hope its just the bulb, its alot cheaper than the relays

 

Eh just gut the grid heater and scrap it unless its like 30 out the truck will start just fine

 

bulbs probably just burned out.

 

how many guys have had bulbs burn?

 

the bulb is probably a 184... its just a small push in one, it'll probably burn out just as fast, maybe a little slower than this bulb being used in any application... they do go out... dunno how often; but nothing is perfect