You need a scan tool, a wiring diagram, and a volt/ohm meter. You need to check wiring between the FCM and the headlight bulbs.
have vehicle scanned to determine the problem
The only light that could come on would be the check engine light.
Does the light say check gauge or check engine?
go to autozone to ask to check your codes
You need to have the system checked for codes to know what the problem could be.
The only proper way is with a scan tool.
Transmission, maybe. Check engine light
I would check for any fault codes first with an obd tool, is the check engine light on?
Resetting an engine light on a 1996 Dodge Caravan SE is very easy to do. The battery can be disconnected for up to one minute to make the check engine light go off.
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Check engine light, see related question below.
Take the - battery cable off and put it back on.