hello Jerry , have a 2004 ram 2500
,5.9 cummins ,, the voltage is going up and down as i warm up the truck 15.8 high and 12.2 low lights get bright then dim every few seconds ,, does this truck have a voltage regulator , or is it incorporated into the altinator .. ? thanks
JA: Just to clarify, what are the exact lights you're talking about?
Customer: the cab lights
JA: Are you fixing your Ram yourself? What have you tried so far?
Customer: yes i will ,, nothing so far ..
JA: Anything else you want the mechanic to know before I connect you?
Customer: i had a tuner installed by a shop,, but the problem was there before that was done ... on the tuner are gages, thats how i could see thechange in the voltage ,,, just want to fix it before damage is done