500w light bar, do I need a stronger alternator
08-28-2015, 05:11 PM
#1
500w light bar, do I need a stronger alternator
I have a 500w 52" light bar on the way but I'm unsure if I will need to swap out my stock alternator. Truck is a 2000 F150 4.6 V8 which I believe has a 90 amp alternator. I don't have any other extra lighting on the truck and just the stock stereo. Do I need to get a 130 amp or even higher? Electricity isn't my thing, thanks.
08-29-2015, 01:20 AM
#2
Timber Baron
Most chinese 50-52" light bars are rated at 300w, so I wonder what the true output/draw of yours will be.
I have 3 x 30" 180w bars (540w total) and I don't have a problem with my 05 powering all those, the high beams, and my subwoofer. When I hit the lights, my battery voltage drops from ~14.4v to ~13.7v.
I have 3 x 30" 180w bars (540w total) and I don't have a problem with my 05 powering all those, the high beams, and my subwoofer. When I hit the lights, my battery voltage drops from ~14.4v to ~13.7v.
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Daffydavid (08-31-2015)
08-31-2015, 04:38 PM
#3
500w light bar, do I need a stronger alternator
Originally Posted by Toshbar
Most chinese 50-52" light bars are rated at 300w, so I wonder what the true output/draw of yours will be.
I have 3 x 30" 180w bars (540w total) and I don't have a problem with my 05 powering all those, the high beams, and my subwoofer. When I hit the lights, my battery voltage drops from ~14.4v to ~13.7v.
I have 3 x 30" 180w bars (540w total) and I don't have a problem with my 05 powering all those, the high beams, and my subwoofer. When I hit the lights, my battery voltage drops from ~14.4v to ~13.7v.