By comparison some H4 halogen bulbs I have use 3.5 amps on low beam and 5.6 amps on high beam when powered up with just a fully charged 12 volt battery and not 14.4 volt normal battery charging voltage.
For me that would save over 5 amps on low beam (assuming the halogens draw more current with higher charging voltage).
Then save around 11 amps or more on high beam (old chevy trucks like mine use 2 head lights for low beam then all 4 head lights for high beam).
In both cases assuming the H4 LED replacement uses about 1 amp for low beam and 3 amps for high beam just as the LED 4x6 lamp used.
Also check out the wiki:
http://ecomodder.com/wiki/index.php/L.E.D_conversion
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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