Charging System update for a '73
#1
The General RE
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Charging System update for a '73
I recently put a 13B-RE Cosmo engine in my RX3. I am using the alternator from this engine and noticed a small problem. When I turn the car off I get a 1Amp drain on my battery through the charge wire. I tried to put a diode inline, but it started to smoke after a minute so I took it off. Has anyone else solved this problem?
#6
The General RE
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Originally Posted by Smeagol
how'd you solve it 13BT? I think mine does something similar, the batt. in my RX-3 is completely dead after about a week of sitting.
Mike
Mike
https://www.rx7club.com/1st-gen-archive-71/electrical-s5-89-alternator-install-into-1st-gen-528440/
The problem was that I had keyed power to the "S" connection, but the Cosmo alternator required continuous power. I made the change and tested it with perfect results.
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#8
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Hmm, that might explain why my alt. also doesn't kick in until I drive the car around a bit. The previous owner did some odd wiring under the hood that I haven't been able to figure out yet.
Mike
Mike
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