fluctuating headlights

[kikoteng]

kikoteng,
check your power sources: your battery and its terminals, check the alternator output. with engine at idle, vehicle at rest, load up with the headlights on and observe the system voltage at the battery terminal cables. then unload the headlights to verify a change in the system voltage. or check with the last electrical component that had ben disrupted or disturbed. the head lights flicker maybe?
jick

jick.cejoco,

Regarding check voltage at the battery terminal cabes, if there is a change in the system voltage, does that mean the alternator is ok ?

Thanks.