having a electrical issue need input

zwilhelm · Feb 28, 2017

i have a 1997 dodge ram 1500 4x4 i just changed the alternator last week bc gen light was coming on but now when i have my headlights on my volt gauge drops same when i have the heat on when i come to a stop headlight dim out when i start to drive it goes back up to 14 anyone have any ideas

sbarron · Feb 28, 2017

Try a different/new battery, make sure the connections to it are clean and tight.

alanack6795 · Mar 7, 2017

zwilhelm said:
i have a 1997 dodge ram 1500 4x4 i just changed the alternator last week bc gen light was coming on but now when i have my headlights on my volt gauge drops same when i have the heat on when i come to a stop headlight dim out when i start to drive it goes back up to 14 anyone have any ideas

The voltage regulator is in the PCM of the truck. Meaning the computer controls the charging voltage.

If your lights are flickering while driving, and you know the alternator is good (it could be bad out of the box). The PCM most likely is the culprit

You can wire up an external regulator if you dont want to swing the $$$ for a new PCM.

A voltage regulator and plug can be purchased for less than $30

http://www.cumminsforum.com/forum/a...ernator-voltage-regulator-17307regulator2.jpg

having a electrical issue need input

zwilhelm

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sbarron

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alanack6795

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