Left rear running light on with battery

[Simpsok]

I have a 2023 Riverstone 39RKFB and the left rear LED running lights stay on with the battery connected. I have swapped the light assemblies one at a time and the problem is still there. I have sprayed contact cleaner on the 7 pin, the light wire connection and the wire box on the pin box. No other running marker lights are on.

[Aussieguy]

are you sure it is running lights and not the left turn and or stop lights

Yellow wire in standard 7 pin wiring diagram

use a multi meter and work out what wires are getting power in the 7pin
then work out why they getting power

https://www.etrailer.com/faq-wiring.aspx

[Simpsok]

I turned multimeter switch down to 20 and took new readings:

Tail/running lights .47v
Left turn signal/brake 5.09v
Ground
Electric brake 0
Right turn signal/brake .12
12V Power 13.19

These were taken at the Pollack plug.