'96 Ram diesel, first time hooked up with trailer, daytime running light module unplugged (lights off when key off now, thanks)...oil pressure gauge acting like a vacuum gauge, up & down with rev's/load, temp gauge erratic, fuel gauge drops to nothing after first top 1/4 of tank. What's up now?
Thanks,
Seann

 

huh... grounding issue ... sounds like to me ...