Quote:
Originally Posted by Musclerodz
Correct that voltage is not affected, amperage is affected. Voltage is like horsepower, amperage is like torque. Also correct that given proper wire size, a relay is not needed. Problem is when you need a 12-14 guage wire to power a window motor or headlight, and you have to pass through a switch with contacts equal to 22 guage, you have a built in resistance. The resistance will eventually build to the point it will stop the flow of electricity and the motor will quit. If held on long enough the switch and or wire would get hot and eventually fail. The relay bypasses this built in choke by attaching the 12 guage wire directly the the power source and turning the switch into JUST a switch, not a power feed.
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Gee.... isn't that what I said??
