Sport72

While driving my 72 Sport to work early the other morning, I noticed that all the lights, inside and out, began to dim almost immediately after startup. By the time I got to work 20 miles later, my headlights were absolutely dark, as well as my interior gauge lamps, radio, etc...Also, my radio would(and still does)cut out whenever I step on the brake or turn on the blinker, I assume this is due to the electronic "strain".
Well, I replaced the battery and alternator both the other day. The battery tested good before I put it in, and so did the alternator. However, after I put the alternator iin the car, I tested it again, and it tested poor. What could be the problem? What should be my next place to look for drain? Regulator, perhaps? Any ideas? Thanks in advance for any help. Corey

9psi EB

Check the wiring from the alt to the battery, also near the battery, there will be a couple of fusible links which connect to the harnesses using plugs & sockets, and these generally build up with corrosion.
Seperate the plug / socket assembly and use an anti corrosion spray or contact cleaner to clean the contacts and see how you go.
Alternatively, you may have a burnt out fusible link which may need replacing.

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taz

sport you may have a short some ware in your electrical charging system all the tips 9psi said would be good to follow as well whats your batt say under load did you get the right amount of cranking amps in you batt you bought what size is you alternator is it big enough to handle all your electical charging needs is it not heavy duity enough .... hope that helps