transalpian
10-17-2014, 11:59 AM
Greetings!
I keep burning out headlight bulbs.
I am running IPF E code conversion lamps on a SMS direct to battery harness (with relay). I run a GM 12si 78A alternator with an oversized (8 gauge) wire to the battery (to the starter solenoid actually).
I keep burning out headlight bulbs. I get maybe a month out a set of H4 bulbs. I've tried high wattage, low wattage, extended life, and the cheapo models. I get maybe a month out of any of them.
My gut tells me I am getting high voltage to the bulbs, but my battery reads 14V when the truck is NOT running.
Where should I be looking?
EDITED TO ADD:
My mistake, the battery reads 14V when not running. At idle (or at higher revs), the battery reads 17V. This feels like my problem?
AND when I move the sense wire coming off the alternator, the voltage when running drops to 14V.
Loose sense wire. Now to tighten it up so I don't keep blowing headlights bulbs, or worse...
I keep burning out headlight bulbs.
I am running IPF E code conversion lamps on a SMS direct to battery harness (with relay). I run a GM 12si 78A alternator with an oversized (8 gauge) wire to the battery (to the starter solenoid actually).
I keep burning out headlight bulbs. I get maybe a month out a set of H4 bulbs. I've tried high wattage, low wattage, extended life, and the cheapo models. I get maybe a month out of any of them.
My gut tells me I am getting high voltage to the bulbs, but my battery reads 14V when the truck is NOT running.
Where should I be looking?
EDITED TO ADD:
My mistake, the battery reads 14V when not running. At idle (or at higher revs), the battery reads 17V. This feels like my problem?
AND when I move the sense wire coming off the alternator, the voltage when running drops to 14V.
Loose sense wire. Now to tighten it up so I don't keep blowing headlights bulbs, or worse...