2018 RAM 2500 With No Running Lights

[DIESELWRKS]

Are you getting a bulb out a notification on your dash that chimes?

Get a tester and see if you have power at the bulb socket.

You said your license plate lights are on all the time?

Even when your light switch is off?

Do the led bulbs that you used do they have built-in resisters?

I know you checked fuses.

Did you pull and look at relays in the box.

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[Jacobp]

I'm having the same issue almost.

When I put in some aftermarket led tail lights (that have resistors), the running lights dont work; the company sent me a new set, and they still have the same issue.

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[Jacobp]

I changed all the AlphaOBD settings too, and nothing changed.

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[DIESELWRKS]

I changed all the AlphaOBD settings too, and nothing changed.

I would look into a better harness with a better resistor setup.

The cheaper ones are usually the ones given with taillights.

I dont know what brand you used for tails.

You could contact headlight revolution.com.

They were accommodating to me in the past on other light goodies.

Our canbus system is finicky.

Good luck.

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