Quote:
Originally Posted by smokeyj
How is the alternator switch going to work? Do you have access to the field winding?
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Basically for 92-95 honda civics, the alternator is controlled by the ecu. When the ecu detects the battery is at full charge, it grounds the alternator. So basically, i got a 2 way switch and spliced the line into the ecu that controls the alternator. Once side is spliced to the ecu, the other side is connected to ground. That way, I can flip the alternator on/off anytime i want. I've got an 85ah deep cycle battery hooked up which gives me about 1.5hours of driving on pure battery.
I can tell it's working because i also have a volt meter hooked up to the battery. When it is switched "on" the voltages show 14ish volts, meaning the alternator is charging. When I switch it off, it drops down to 12ish volts.
Once, i forgot i left it in the "off" position and I ended up stranded at work. Luckily a coworker helped jump my car.