Midniteoyl
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17 pages in.. I'm just throwing stuff out there.
Trailer Lights Gurus--Got a Question.
- Thread starter npalen
- Start date
- Views: 22876
WranglerX
Super Member
I'm betting its all the wiring harness in truck... Picture on Hopkins site shows a ground wire with ring connector and a screw, BUT instructions mention nothing about connecting it.... Is it connected to truck body or chassis?
DODGE Vehicle Specific Kit
hopkinstowingsolutions.com
Last edited:
OP
npalen
Elite Member
Yeah, I did finally buy a probe tester the other day. Should have done that 60 years ago but have always used a VOM or DMM.Check connector on truck first.... If its good, then trouble shoot trailer... IF brake pedal pressed you should have 12volts at yellow and green wires at plug on truck...
IF turn signals work at trailer the trailer wiring is good.... IF you take small 12 volt battery (battery charger or jump box) and a clip cord to connect trailer plug ground wire to minus (-) side of battery supply and use another clip cord to put 12 volts from battery plus(+) to each of the corresponding wires (yellow/green/brown) and proper LEDS illuminate on trailer, all your problems are in truck....
At trailed plug using just a 12volt battery (or battery charger)
put ground on trailer white wire
put 12 volts on brown wire, tail lights ( and side markers if equipped) come on.
put 12 volts on green wire bright LED for RIGHT side stop/turn comes on.
put 12 volts on yellow wire bright LED for LEFT side stop/turn comes on.
If you get these results your trailer wiring is good..... PERIOD...
Also find this tool for trouble shooting best ever.... Lamp "on" you have both voltage and ground.. Lamp off, either voltage or ground or both missing...
Just to be clear I have 4 multimeters, 2 analog and 2 digital, and this $5-10 tool is preferred for automotive wiring trouble shooting (non computer circuits) ...
And yes I do get deep wiring, this is a in process picture of developing a full wiring harness for VW DUNE BUGGY with all full road legal wiring for lights and engine instrumentation...
And done,,,
So doing a little checking this evening I see that I don't have the brake light function working on my pickup either.
One would think that I should have noticed that when looking for brake lights on the trailer. Duh.No wonder the trailer brake lights don't work. So, anyway, I'll go looking for the fuse when I get a little more time and it probably needs replaced.
Makes we wonder how long I've been running without brake lights on the pickup? This whole experience again teaches me, at 75 years of age, to not take anything for granted.
WranglerX
Super Member
Got you beat a little bit...76 here but my whole career in several worlds has been some forms of wiring....Yeah, I did finally buy a probe tester the other day. Should have done that 60 years ago but have always used a VOM or DMM.
So doing a little checking this evening I see that I don't have the brake light function working on my pickup either.
No wonder the trailer brake lights don't work. So, anyway, I'll go looking for the fuse when I get a little more time and it probably needs replaced.
Makes we wonder how long I've been running without brake lights on the pickup? This whole experience again teaches me, at 75 years of age, to not take anything for granted.
Torvy
Super Member
Been reading this whole thread. Learned a lot from those who actually helped OP troubleshoot. Just wanted to give y'all a shout out.
MossRoad
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Hey, at least you found something.Yeah, I did finally buy a probe tester the other day. Should have done that 60 years ago but have always used a VOM or DMM.
So doing a little checking this evening I see that I don't have the brake light function working on my pickup either.
No wonder the trailer brake lights don't work. So, anyway, I'll go looking for the fuse when I get a little more time and it probably needs replaced.
Makes we wonder how long I've been running without brake lights on the pickup? This whole experience again teaches me, at 75 years of age, to not take anything for granted.
Williy
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I got you 2 guys beat I'm 81 1/2 just a grumpy ole fart!
Me tinks u need a schnapps & liter of becks while on break
to help you relax!
willy
Me tinks u need a schnapps & liter of becks while on break
to help you relax!
willy
OP
npalen
Elite Member
You're a bit old to be on the metric system, Willy.
OP
npalen
Elite Member
HaHa That wouldn't be any fun when you can pester all these good folks on TBN.
Its good to just have someone to talk to for some of us old farts. (and the help is very much appreciated)
Edit: The expression "cripes" is one that I don't hear very often anymore. I think it was my Dad's favorite back on the farm in the 50's. He had a few other choice ones also including "well judas priest".
Its good to just have someone to talk to for some of us old farts. (and the help is very much appreciated)
Edit: The expression "cripes" is one that I don't hear very often anymore. I think it was my Dad's favorite back on the farm in the 50's. He had a few other choice ones also including "well judas priest".
