LED light conversion Boler - Fiberglass RV


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Old 09-01-2012, 01:43 PM   #1
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LED light conversion Boler

I just bought 7" new led tail lights from princess auto for my 74 boler but they have a single wire for the brake and turn signals. My boler has a separate green wire and red wire for the break and turn signals. Can someone help me on how to install the new lights. Thanks in advance.
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Old 09-01-2012, 02:08 PM   #2
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Generally, a single light fixture will have one wire for running lights and a second wire for combined brake and turn signal light.

Are you sure that is not what you have now? You can test it with a battery charger or other DC source. The brake/ turn signal should be much brighter than the running light.
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Old 09-01-2012, 02:34 PM   #3
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The light has a single wire for turning/braking and a second for running, however the trailer is wired with three wires, turning, running and brake.

There are two bulbs one with a dual socket bulb with red and green wires ( this is the turn and brake)and the other single socket with a dark brown wire ( I think this is the running light but I have yet to get it working)
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Old 09-01-2012, 03:04 PM   #4
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Shannon, every trailer is a little different re the wiring but hopefully someone will be able to answer. On mine I found it a bit confusing as like you I had to many wires on the trailer end vs the new LED light .... honestly cant recall which color wire I ended up putting on what but I ended up with two wires turning & braking from the trailer onto one on the new LED. If you havent tried it already it cant hurt anything to connect both and give it a try it will either work or not work.
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Old 09-01-2012, 03:20 PM   #5
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Shannon,
Double check the princess auto part number. You probably got the single turn or brake light rather than the two combined which has 3 wires.
Been there, done that.
The good thing is that PA does not hassle about returns.
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Old 09-01-2012, 03:22 PM   #6
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It sounds like you have conventional wiring (a four pin connector) at the hitch. Use the tail (running) light wire to power the running light portion of the LED fixture and combine the brake and turn signal wires to power the bright portion of the LED fixture.

If you don't have a 4 pin connector at the hitch, the advice is different.
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Old 09-01-2012, 03:28 PM   #7
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You should have 3 wires out the back of the LED like this one here:
Transit LED Stop/Side Marker/Tail Light - 31 Diode, 12 Volts - 7" Round - Red Optronics Trailer Lights STL90RB

Unless you can see that one of the screw holes is actually a ground.
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Old 09-01-2012, 03:44 PM   #8
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Quote:
Originally Posted by Roy in TO View Post
You should have 3 wires out the back of the LED like this one here:
Transit LED Stop/Side Marker/Tail Light - 31 Diode, 12 Volts - 7" Round - Red Optronics Trailer Lights STL90RB

Unless you can see that one of the screw holes is actually a ground.
In the picture, it appears that the white wire is the ground. The OP's light may just ground off the housing. In any case, my above advice stands.
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Old 09-01-2012, 04:17 PM   #9
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Tom,
I had the same problem with the same lights as the OP. Princess Auto stocks a 3 wire on the shelf. Where these came from, who knows.

The simple way to test is to connect only the 2 wires to 12 V, if all the LED's light up then it is not a stop/tail/turn light. (The polarity may need to be reversed to test)
If neither works then there has to be a ground somewhere on the fixture.

I agree with your advice.
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Old 09-01-2012, 10:41 PM   #10
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It is a stop/turn/tail transit light princess auto model number 5059586. I have a 7 way tow plug and one of the new lights wires is a ground. Should I then combine the bolers turn and brake wires together and attach them to the one stop/turn wire on the new light?
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Old 09-01-2012, 10:57 PM   #11
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The white wire is ground, red wire is turn/stop, black wire is tail lights. Use a test light it will help you out. Plug trailer into the tow rig.
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Old 09-02-2012, 12:14 AM   #12
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shannon,
you say 2 wires, of which 1 is the ground. so when you connect the other to power all the LEDS light up?
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Old 09-02-2012, 07:42 AM   #13
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The possibility exists that the TV was wired with a 7 pin plug so the trailer turn signals and the brake lights could be separate. Some tow vehicles have a separate turn signal and brake light, so this would have simplified wiring the trailer.

Shannon, does your Boler have brakes? A 7 pin connector without brakes would be unusual.
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Old 09-03-2012, 11:37 PM   #14
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Thanks for the great advice, I was able to only use the red wire for the break and turn signal. I didn't use the green wire at all and the new light looks and works great.
Thanks again.
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