61-79-list-digest Friday, April 30 1999 Volume 03 : Number 146
Ford Truck Enthusiasts - 1961-1979 Trucks and Vans
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In this issue:
Date: Fri, 30 Apr 1999 03:08:40 -0400
From: George Selby
Subject: FTE 61-79 - RE: How much is too much
I had a 69 VW Bug with only a 300 watt amp and 2 15" subs, and with the
stock generator, the car would completely shut off at night when a big bass
note hit. I had to convert to an alternator just to drive! The only way
to see for sure is to add up the amps. Wattage/12 = Amps drawn. If you
draw more than your alternator can produce, you will have trouble. The
ignition draws about 10 amps for your calculations, same with the heater
fan on full. Or take it to your local battery dirtributor (Sears, Advance,
Western, Pep Boys) and have them check the amps you are drawing with
everthing on. They have a meter that clamps on the battery cable and can
read high amps indirectly (reading directly could kill you) How much you
exceed the output is directly proportional to the problems. Summit racing
sells 100 amp alternators for $99.
78 F-150 400, 4 on floor, 4x4
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End of 61-79-list-digest V3 #146
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