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Old 01-08-2012, 02:56 PM
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battery drain 69 camaro with cs130d uprade

After installing a new reman cs130d when the old one blew a diode, i now have battery drain of 4.5 amps. it goes away after disconnecting all hot wire connections including the alternator. Shen I hook just the Alt, the drain comes back. I need help. I even put another new alt. in with same result .I pulled the fire wall connectors to the cockpit and still get the drain, so I know it is in the engine compartment. The horn relay is disconnected the jumpers on the old external regulator is disconnected. All to no avail. This thing has kicked my butt.

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Last edited by phantomfixer; 01-08-2012 at 03:06 PM.
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Old 01-08-2012, 04:14 PM
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I'll put money on the #1 and #2 alt terminals are reversed, Did you change out the pig tail? With I did my swap, that's what happened to me, trace your pig tail wire all the way back to the voltage reg jumpers to the firewall and make double sure the wires arn't reversed.
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Old 01-08-2012, 06:04 PM
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battery drain

thanks for the tip. I'll check first thing in am.
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Old 01-09-2012, 03:51 PM
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69 cs130d battery drain

OK, EOD GUY I checked the wiring for the exciter portion of the alternator. checked ok. Totally confused now. did a diode check on the reman alt. and the scrap yard one,both metered the same, so internal diode is good.
anyone have the same problem?
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Old 01-09-2012, 04:19 PM
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I would check the wiring to be sure the exciter wire is dead when the key is off. If it isnt it is keeping the alternator on all the time
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Old 01-10-2012, 04:11 AM
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Not to beat a dead horse, but it sounds like the internal regulator is shorting to ground when you turn the key off.

Does the alt get hot, not warm, after sitting and the battery draining? If so it's shorting to ground.

The #1 terminal should be hooked to a drk blu wire that is routed to the ext reg and jumpered to the sm brn exciter wire.

The #2 terminal should be hooked to a wht wire that is routed to the ext reg and jumpered to an org (fuseable link) that's spliced to a red wire that's spliced into the large factory splice that supplies pwr to the rest of the vehicle
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