Recommendation on a Trailer Light Tester

Question

Question:

Is it possible to test the RV fictions w/o wiring the plug to the trailer. I want to use this with multiple vehicles as a diagnostic tool.

asked by: Rod

0

Expert Reply:

I found a solution for you. The 7-Way Trailer Vehicle Tester, # C73NR, will allow you to test the lighting functions on your vehicle's 7-way trailer connector.

The plug connects and used LED lights that will display if you have a properly functioning 7-way or if there is an issue with the vehicles signal output at the connector.

Also, if you are needing to test a 4-way flat connecter, I recommend the Curt LED 4-Way Tester, # I26.

expert reply by: Jared P

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Answer 1

Our installer here will spray the light with some lubricant around where the light meets the grommet and then will use a screwdriver to pry the light out first, and then the grommet. If you check out the install video I attached you will see this…

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Answer 2

The Hopkins 6-Pole to 7-Pole Trailer Wiring Adapter #47435 will definitely work as an adapter, but you will indeed have no reverse lights. I do also need to mention that the 6 Round style plug is not going to be a very common style so it may not be a…

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Answer 3

Thank you for all of the details in your question. It looks like you have a faulty ground or some corrosion in one of your connectors. On a trailer the functions for your turn signals are also tied into the brake lights so if your right turn signal…

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Answer 4

On a trailer the brake lights and turn signals operate on the same wire/bulb. So, it is odd when the turn signals work, but the brake lights don't. There are 3 possible causes for this that are more likely than any of the other possible causes.…

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Answer 5

We do have the tester you are looking for with the #I26. I think the confusion is that the part number is not 126 as its I26.

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Answer 6

You have it right so far, the 4-way connector is just as you have stated. Remember that Yellow has a L in it so that is the left side brake/turn signal and green has a R in it so that is the right side brake/turn signal. The colors for wiring a 7-way…

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Answer 7

I am unable find any lights like these that have the 4 wires for attaching to the light. You should be able to test each of the wires for their function using a 12 volt battery and connecting the wires directly to the terminals. My only concern is…

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Answer 8

It could be a tow package fuse on the vehicle. Use the owners manual to find the locations of fuses/relays related to the tow package wiring to check them and replace as needed. If the issue is not a fuse or relay then you can test the vehicle side…

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Answer 9

In regards to removing or installing a light with large rubber grommet like the Peterson Trailer Tail Light part #435800, you can use anything from a soapy water mix or a can of WD-40. It's simply helping the light install or remove with less…

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Answer 10

Your brake lights and turn signals for each side are on one circuit. The left side turn signal and brake light is generally the yellow wire going into your trailer connector. The first thing to do is check the fuses on your tow vehicle. Next, inspect…

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Answer 11

I wasn't able to find much detailed information on the Signal Stat 9031 model light assembly that you mentioned other than that it has been discontinued. In order to see if the Peterson Light Red Flush Mounted Turn Signal #435800 will work well…

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Answer 12

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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