H4 and H7 bulbs..
11-15-2006, 09:30 PM
#1
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H4 and H7 bulbs.. I herd H4 has higher wattage bulbs.. But was wondering i know how to hook up H7 to our car but the H4 has three prongs. Whats the third for?? How would i go about rigging this up?
11-15-2006, 10:40 PM
#3
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The H4 bulb has a low beam and high beam filament. Thus, it has two positive prongs (one for low and one for high beam) and a common ground prong.
Also, look at the actual lumens output and not just the wattage.
Also, look at the actual lumens output and not just the wattage.
11-15-2006, 11:21 PM
#5
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One housing...what?
H4 has 3 prongs
* one prong is the positive for the low beam filament
* one prong is the positive for the high beam filament
* one prong is the common ground for both filaments
To turn on the low beam filament, wire up the low beam positive prong to a positive 12volt source and the common ground to a good gound.
To turn on the high beam filament, wire up the high beam positive prong to a positive 12volt source and the common ground to a good gound.
To turn on both filaments, wire up both positive prongs to 12volt sources and the common ground to a good ground.
H4 has 3 prongs
* one prong is the positive for the low beam filament
* one prong is the positive for the high beam filament
* one prong is the common ground for both filaments
To turn on the low beam filament, wire up the low beam positive prong to a positive 12volt source and the common ground to a good gound.
To turn on the high beam filament, wire up the high beam positive prong to a positive 12volt source and the common ground to a good gound.
To turn on both filaments, wire up both positive prongs to 12volt sources and the common ground to a good ground.
11-16-2006, 01:27 AM
#6
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Originally Posted by VIP1
One housing...what?
H4 has 3 prongs
* one prong is the positive for the low beam filament
* one prong is the positive for the high beam filament
* one prong is the common ground for both filaments
To turn on the low beam filament, wire up the low beam positive prong to a positive 12volt source and the common ground to a good gound.
To turn on the high beam filament, wire up the high beam positive prong to a positive 12volt source and the common ground to a good gound.
To turn on both filaments, wire up both positive prongs to 12volt sources and the common ground to a good ground.
H4 has 3 prongs
* one prong is the positive for the low beam filament
* one prong is the positive for the high beam filament
* one prong is the common ground for both filaments
To turn on the low beam filament, wire up the low beam positive prong to a positive 12volt source and the common ground to a good gound.
To turn on the high beam filament, wire up the high beam positive prong to a positive 12volt source and the common ground to a good gound.
To turn on both filaments, wire up both positive prongs to 12volt sources and the common ground to a good ground.
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11-16-2006, 09:50 PM
#8
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Originally Posted by 01ls1lover
thanx!
Originally Posted by InfiniteReality
Just curious, but a H4 bulb will fit in an H7 housing and all you need to do is re-wire the harness?
