my 03 dodge cummins reverse lights dont come on and its not the bulbs or fuse, what could it be?

ive tried everything, i changed the bulbs and the fuse is still good

nik b2008-08-20T16:09:45Z

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i find alot of the tiwhen all other routes have been explored check you trailer wireing if equipped ive seen bare wires and bad grounds and shotty work when installing those things is a very common cause of light malfunction in the tail lamps or it could be an the trans.

newrideforu2008-08-20T20:31:31Z

It most likely is the nuetral start safety switch if it is an automatic or reverse light swich if it is a stickshift.

John A2008-08-20T18:33:34Z

if both lights lights dont come on its the fuse

Daniel B2008-08-20T13:44:32Z

could be the switch on top of trans or bad wire , corison