marker lights dont work

[redrocket78]

I bought my Deuce a few months ago. When I bought it everything worked fine. Randomly the front running lights stopped working whether the head lamps were on or not. However the turn signals do work. I have been prodding around with my volt meter and found that most of the lamps are 12 volt and the black out markers are 24 volt systems which kinda makes me think the problem is in or near the switch. I also have yet to find a fuse panel on my truck. Any help or ideas of places to start would be appreciated.
Thanks.
Chad.

 

[doghead]

Best place to start is with the basic operators manual, TM9-2320-361-10

It will explain the light switch functions(front parking lamps do not stay on when the headlights are on), and many other things you need to know.

Only one fuse on a Deuce.

 

[Bill W]

There's 2 ( thermal ) breakers on a deuce, one is on the firewall in the engine comp ( horn ) and the other is in the light switch.
If it's the front park lights that your talking about, they don't come on with the headlights ( as mentioned)

 

[1 Patriot-of-many]

Doghead nailed it as usual. Park lights on the front only work when you have the left triswitch toggle in PARK. There's a rather easy fix to get your front park lights to be on when the headlights are on though.

Get yourself some connector kits( Rubber Shell Connectors (qty 10) MS27144-1) and two Y connectors(Rubber Shell "Y" Connector MS27147-1) from www.EriksMilitarysurplus.com . Make yourself two jumpers.
Disconnect wire 491( shown out of the pic resting by itself on the "shield". Connect wire 469 to your single "port" of the Y connector. Connect your jumpers from the double"port" side of the Y connector to wire 491 and 489. Tuck it all back under the "shield or whatever it's called) Presto, your park lamps are lit whenever you have your headlights on.
Best way to crimp these is use a vise. Get yourself 2 of the 10 packs IMO, took me a few times to get the crimps right. Oh and use 14 gauge wire available at any auto parts store.
Not my idea, passed on by others, works great.

 

[redrocket78]

Thanks so much. I was hoping I wasn't going to be beat down for the newb question. You guys are the best.

 

[BIGDDV]

All of the bulbs should be 24 volt. nothing should be 12 volt.

 

[steelandcanvas]

Oh and use 14 gauge wire available at any auto parts store.
Not my idea, passed on by others, works great.

1POM is correct, the auto parts store wire is OK to use, however it should be noted that Erik's and others have the correct Mil-Spec wire. The Mil-Spec wire is very corrosion resistant, much like a good grade of marine application wire. The better quality stuff is always my first choice when doing wiring projects on my Deuce. Just my .

 

[redrocket78]

I was checking voltage at the trailer wiring plug to see which pins were used for left, right, and brakes. I was getting 12 volts there. I didn't check voltage at the light bulbs.

 

[BIGDDV]

WOW, i wonder if someone put a set of resistors to the trailer plug???? or are the trailers 12v?

 

[73m819]

trailers ARE 24v

 

[SoundGuy]

There's 2 ( thermal ) breakers on a deuce, one is on the firewall in the engine comp ( horn ) and the other is in the light switch.
If it's the front park lights that your talking about, they don't come on with the headlights ( as mentioned)

There is also a fuse on the fuel pump.

 

[redrocket78]

Hmm. It looks like I need to recheck the trailer plugs and see whats going on there.