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marker lights going out. Keep blowing fuse

84CUCV

84CUCV

3/4 ton status
Joined
Jul 1, 2002
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NJ for now
I was messing around the fuel pump in the tank. Trying to get it to work. Since then the marker lights will not work. I have headlights, brake lights and turn signals. Did everything I could think of. grounds seem good and clean. didnt find any bare wires or anything like that.. truck is a 86 m1008. Any ideas? Thanks
 
Could be bad accessory wiring hacked in, especially on CUCV's. My M1009 had a trailer plug wired in very ... creatively, let's say, by somebody who didn't *get* that a half-12V / half-24V system must be treated carefully.

-- A
 
Basic rule of troubleshooting. If something is working, then you do something and it quits, go back to what you did.

I don't care if you change the left front tire and the right rear tail light goes out, check what you did when you changed that tire.

In this case, it sounds like you may have pinched a wire or moved one and its touching something.
 
Yer marker lights and tail lights share a power wire.
I would check the wiring close to the taillights, or coming from it.

Stupid question, but have you actually checked the bulbs?
There could be water/dirt under the bulb.
 
no didnt think to check the bulbs.. i will go back see what did if anything
 
84CUCV said:
I was messing around the fuel pump in the tank. Trying to get it to work. Since then the marker lights will not work. I have headlights, brake lights and turn signals. Did everything I could think of. grounds seem good and clean. didnt find any bare wires or anything like that.. truck is a 86 m1008. Any ideas? Thanks
Click to expand...

Pretty good clue.
 
British Slave said:
You are correct. However the wiring runs right next to the fuel tank. And all was well till he "messed" around the fuel pump. Just sayin.
Click to expand...
I totally agree... That is the best place to start.
I was just defending my idea.

Knowing CK5, it'll end up being something totally different/random... :haha:
 
And people wonder why I write in such detail.
That was the point I was trying to make in post 4, but did not follow through and actually say that he might have messed up a wire while working on the fuel tank........

Sometimes brief works, and sometimes not..........:dunno::D
 
In OUR defense....there is something missing in the original story. If the pump didn't work and he was messing around with it, did he fix it or not? His wording inplies he did not fix it (trying to make it work) if the pump's not working why the hell be worried about lights?
 
British Slave said:
In OUR defense....there is something missing in the original story. If the pump didn't work and he was messing around with it, did he fix it or not? His wording inplies he did not fix it (trying to make it work) if the pump's not working why the hell be worried about lights?
Click to expand...


Even if it won't run, he wants it to look pretty.......:D
 
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