I bought this Ram in January and I'm having issues with the turn signals. The right turn signal flashes very fast. The left turn signal flashes normal but the license plate lights flash with it. It has the factory tow package with the 7 way and 4 pin flat plug. The 4 pin plug was corroded and I cleaned it but this did not help. I replaced the bulbs on the right side. The grounds under the hood look good. Are there any body or frame grounds I should be looking at ?

The tail lights need to ground someplace. It sounds like both rear grounds are bad. The right side is flashing fast, which might indicate a bad ground, and the left side has the license plate light flashing with it, indicating it may be grounding through the license plate light. Gene