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Showing results for tags 'wiring old car electrical'.
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Hi all, So I have an old ms85 crown with an efi conversion in it. So strange thing, The car works perfectly running from the battery with no alternator. With an alternator in the circuit something strange is going on with the electrical system where the rpm affects the power in the whole car. So with the alternator hook up, I idle and put some load on the car and release the clutch, the lights dim, the fuel plump strains and the whole electrical system is pissed off. I unplug the main feed from the alternator to battery and run the car off the battery and everything is perfect. I have a new alternator so this is not the problem, there was nothing wrong with my old alternator either. The battery appears to be ok. I think I'm in the more advanced area of troubleshooting, maybe the electrical system is changing is reference to ground in relation to alternator output. I don't know its strange I've disconnected as much as possible to troubleshoot but as soon as a put the main feed from the alternator charge terminal to the battery on, I get rpm varied voltage throughout the whole car. Help is much appreciated.
