Should There Be Continuity Between Running Lights And Ground Circuit While Bulb Is Disconnected

Question

Question:

Should I have contenuity between the brown and white wires on my 4 wire trailer. All bulbs are disconnected. Original problem is Rt. Turn/Brake dont work. Voltage for green wire is 10v and ground is present

asked by: Ken H

0

Expert Reply:

If the light bulb is disconnected from the socket, there should not be any continuity between the running lights (brown wire) and the ground (white wire). It sounds to me as if you may have a shorted or pinched wire somewhere along in the trailer's wiring harness either on the brown or white wire.

You will first want to visually inspect both wires coming from the trailer connector unto the trailer lights. Be sure to seal any loose or broken connections. The next thing you will need to do is re-ground the trailer. You can do this by tracing the white wire back from the connector until you find a suitable bare metal surface on the trailer frame in which you can attach the ground wire to.

Once a visual inspection is complete to which no loose or damaged wires are found, you will need to route a new running light wire from the back of the connector to the running lights on the trailers frame.

expert reply by: Conner L

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Answer 1

My suspicion is that you have a poor ground connection somewhere on your trailer. The fact that everything works fine until the running lights are turned on is the dead giveaway. When the tail lights are turned on, the trailer lighting is drawing…

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Answer 2

You won't need any type of converter when installing the Curt Universal Tail Light Wiring Kit #C63CR on your 2013 Lincoln MKS. However there is a distinct process that you'll want to follow to determine how this system will be installed that…

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Answer 3

We have a online diagram that will help you understand how the break away system is wired into your trailer. It is actually a simple installation. The system splices into the existing trailer wiring. The break away box will have 3 wires coming out of…

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Answer 4

The most likely cause for the turn signals not to work when the running lights are on with your trailer is a bad or weak ground. It's very possible that a weak ground connection can be just strong enough to allow sufficient current for some…

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Answer 5

You will first want to check the fuses on your tow vehicle. Some vehicles could have fuses for operating the turn signals and brake lights of a towing package. You will want to check if they are installed and working properly. The next thing is to…

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Answer 6

The diodes of the Curt Universal Tail Light Wiring Kit for Towed Vehicles #C63CR that you referenced were not designed to be replaced. They are very reliable though so it's not something you'd really need to worry about. They are under the…

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Answer 7

Finding continuity to ground on the running light circuit of your trailer indicates that the circuit has a short to the frame of the trailer most likely and is your problem. What you'll need to do is trace the circuit starting at the assemblies…

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Answer 8

Yes, in order to check to see if you have a trailer battery charge line ran on your 2011 Winnebago Motorhome all you will need to do is test the pin on the 7-way in the 1 o'clock position with a circuit tester while the vehicle is running. If you…

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Answer 9

It sounds like there is a short circuit that is overloading the running light circuit in the tow package wiring on your tow vehicle. The most likely culprit is a dirty or corroded trailer connector on the vehicle or trailer if not both. The first…

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Answer 10

You should have continuity between the 5 o'clock brake output pin and 7 o'clock ground pin in your 7-way connector with the brakes applied. I recommend turning the trailer brake controller to its max setting and having someone apply the…

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Answer 11

It is normal to have continuity between the brake(blue) wire and ground(white) wire. The electric trailer brake is an electromagnet when it has power it attracts to the steel inside the hub/drum. If you are having issues with your trailer brakes…

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Answer 12

You may not even need load resistors to switch to LED lights. The best thing to do is to try the lights without load resistors first. No need to purchase something you may not need until you know need it. Load resistors such as #DI34ZR dissipate heat…

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Should There Be Continuity Between Running Lights And Ground Circuit While Bulb Is Disconnected

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