2015 Ford F-350 Trailer Running Lights Have Only 3.35V at Plug

Question:

2015 F350 Trailer running lights have only 3.35 volts at plug, I have checked all fuzes and replaced

asked by: JOHN

Expert Reply:

If you are getting low voltage at the running light pin on your 2015 Ford F-350 then you will want to start off by checking the grounds on your F-350. Make sure they are secure and connected to a clean, bare-metal surface.

If that is the case then you will need to move on to the wiring itself. Check the wiring on your running light circuit for any places where it is damaged, bent, exposed, or corroded and replace. You can use 16 Gauge Wire # 16-1-1 and Butt Connectors # DW05744-5 to do this.

Another option is to check the connector on your F-350 to make sure there is no corrosion.

If this doesn't fix your problem let me know and I can help you troubleshoot further.

expert reply by: Jon G