Hey Guys,
I recently upgraded to a 3G alternator (130A) on my 93 Cobra and I am having a problem I was hoping you guys could help me with. I used the PA Performance 4GA power wire with 200A megafuse connected from the alternator output post to the positive side of the ignition solenoid. I'm not using the stock 10GA black/orange power wires. I connected the white wire from the old harness into the stator plug on the alternator and reused the D plug harness. I also added another 4GA ground wire. I have even had the alternator tested and it is putting out 130A.
The problem I am having is that it does not seem to be charging the battery. With the car running I would expect to see over 14V at the battery, but I'm only seeing 12V. With the car off, I am seeing 12V from the alternator output wire, but only 10.5V with the car running. I have tested the yellow A wire on the D plug and I'm seeing 12V with the key off. I am also seeing 12V from the green I wire on the D plug with the key on. Do you guys have any ideas where I should go from here?
Any help you can provide will be much appreciated!!
I recently upgraded to a 3G alternator (130A) on my 93 Cobra and I am having a problem I was hoping you guys could help me with. I used the PA Performance 4GA power wire with 200A megafuse connected from the alternator output post to the positive side of the ignition solenoid. I'm not using the stock 10GA black/orange power wires. I connected the white wire from the old harness into the stator plug on the alternator and reused the D plug harness. I also added another 4GA ground wire. I have even had the alternator tested and it is putting out 130A.
The problem I am having is that it does not seem to be charging the battery. With the car running I would expect to see over 14V at the battery, but I'm only seeing 12V. With the car off, I am seeing 12V from the alternator output wire, but only 10.5V with the car running. I have tested the yellow A wire on the D plug and I'm seeing 12V with the key off. I am also seeing 12V from the green I wire on the D plug with the key on. Do you guys have any ideas where I should go from here?
Any help you can provide will be much appreciated!!