voltage drop at license plate bulb. Only 7.6 volts.?
#11
01-26-2012, 06:28 PM
No, the testing was done on the connection side of the plug, the back is sealed....
Thanks for that.....just went out and retested to verify, and I now have less that 1 volt at the bulb socket, and the upstream plug (socket side)...whereas, yesterday, I definately had 7.6 volts. seems like something is loose upstream of the plug, either at the back of the plug, or into the harness itself. Did a lot of wiggling, but nothing...
When you say read the brown wire to frame, you mean touch the brown wire with one test lead, and the frame with another...correct?
Thanks for that.....just went out and retested to verify, and I now have less that 1 volt at the bulb socket, and the upstream plug (socket side)...whereas, yesterday, I definately had 7.6 volts. seems like something is loose upstream of the plug, either at the back of the plug, or into the harness itself. Did a lot of wiggling, but nothing...
When you say read the brown wire to frame, you mean touch the brown wire with one test lead, and the frame with another...correct?
#13
01-27-2012, 01:28 PM
Looks like it's in the wiring harness. It won, I will make due with one light. I suppose I could jump one to the other if I wanted.
Thanks all
Thanks all
#14
01-27-2012, 03:44 PM
Yep, you can.
Like I said, read each wire to chassis/frame. If the brown is low, make a jumper from the pass side brown. Likewise if you read voltage on the black wire, from pass side black.
They are supposed to be tied together in the splice pack anyway.
UpDATE!!
And btw, one of the scary things about helping out here is how often my truck comes down with similar problems after I help out.
Watched the wife pull out of drive yesterday AM and saw neither of her lic lites were working. Changed the bulbs, both were blown BUT still didnt work. Yet all the park lites worked.
Took about 1/2 hour to find the fuse for it - admittedly I was updated my image files at the same time.
In 99 the underhood fuse that drives license lights is...
TRL PRK
Now I'm crossing fingers cuz I dont know how it blew. Last hooked up a trailer about 4 months ago and I'm sure the lights worked since then. Could conceivably happen at time bulb blew.. the right side one was totally blackened.
Like I said, read each wire to chassis/frame. If the brown is low, make a jumper from the pass side brown. Likewise if you read voltage on the black wire, from pass side black.
They are supposed to be tied together in the splice pack anyway.
UpDATE!!
And btw, one of the scary things about helping out here is how often my truck comes down with similar problems after I help out.
Watched the wife pull out of drive yesterday AM and saw neither of her lic lites were working. Changed the bulbs, both were blown BUT still didnt work. Yet all the park lites worked.
Took about 1/2 hour to find the fuse for it - admittedly I was updated my image files at the same time.
In 99 the underhood fuse that drives license lights is...
TRL PRK
Now I'm crossing fingers cuz I dont know how it blew. Last hooked up a trailer about 4 months ago and I'm sure the lights worked since then. Could conceivably happen at time bulb blew.. the right side one was totally blackened.
Last edited by pettyfog; 01-30-2012 at 09:25 AM.
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