All lights went out on my '85 M1008

[thatK30guy]

Was driving the other night in the dark and suddenly all of the lights went pitch black. Nothing working at all. Not even the black out switches on the M.

Did a Google search to see what was out there and found this: http://www.truckforum.org/forums/chevy-truck-forum/32485-no-headlights.html

I need a pic of what to look for here. If anyone else has had this problem, and since there is no fuse for headlights, what am I looking for under the dash?

 

[thatK30guy]

Nobody has an answer or idea to this?

 

[sweetk30]

might be more / faster specific help here since its a mil spec vehicle .

http://www.steelsoldiers.com/

 

[80' 427]

Mine was a bad wire at the starter.

 

[diesel4me]

On a civillian truck I'd say its probably melted fusible links at the starter ,but I dont know if the 24V versions are the same or not..

 

[la-zdunck]

is your truck still 24v?

im having this exact same problem on my m1009 converted to 12v

ive been poking around for weeks trying to figure it out. Ive got ignition acc and radio, but no int, head, tail, stop or turn lights. the fuses for the tail/stop/turn/etc are good, but ive got no juice at the fuse block itself.?. I'm also wondering if the blackout switch may have went bad.?.

 

[Metrodps]

is your truck still 24v?

im having this exact same problem on my m1009 converted to 12v

ive been poking around for weeks trying to figure it out. Ive got ignition acc and radio, but no int, head, tail, stop or turn lights. the fuses for the tail/stop/turn/etc are good, but ive got no juice at the fuse block itself.?. I'm also wondering if the blackout switch may have went bad.?.

http://www.roscommonequipmentcenter.com/news_notes/nn10.pdf
24 to 12 volt conversion by a reputable company.

This might help you with your problem on his probably not. I have a similar problem on my 1993 Blazer where I lose all headlights and then in a few they come back on after fiddling with it.

 

[Massboy]

The right blackout switch controls the headlights, tail lights, dash lights, horn in the up position and the blackout running lights in the down position. The left momentary blackout switch energizes the black out headlight. If you have horn you should have a good switch at least. The right blackout switch is often the culprit for the all of a sudden light loss. Try blowing the horn with the switch up and centered to see if it is functioning. I believe that switch powers the fuse block for a majority of vehicle functions.

 

[Backroads]

Another "big" thing to check, look for a (should be) 30 amp fuse in the fuse box. An ingenious idea by the electrical engineers that designed the superb system on these trucks, the ENTIRE 12volt lighting system goes through one 30amp fuse, headlights included, this is CUCV only. I found out the hard way, while trying to tow a trailer at night, in the rain. The added amperage of all the trailer lights melted the fuse within a minute of plugging in the trailer. I lost headlights along with everything else. The trailer had no shorts, and never had a problem behind any other truck. On the civilian trucks, headlights are separate from the other lights circuits. If I remember correctly, there is no headlight fuse on the civilian trucks. There's only built-in circuit breaker in the headlight switch, which could open, and then close later after it cools.