Electrical Help Please

Kendog 170 said
:popcorn: I have the same type issue. Check your grounds and the way the trunk mount battery is wired. That was my issue, I think. I'm still doing other things and am waiting for warm weather.
I think if you disconnect negative while running, it should stay running? If it dies, some type of charging issue? IDK but someone will correct me.
67Dart273 will chime in. He knows his stuff.

I disconnected the negative battery cable from the battery and let it idle about 5 min. It stayed running the whole time.

Could it be the alternator is not putting out enough amps for the car? It has a couple electric fans, MSD 6 ignition, A long battery cable to the trunk...........I'm sure that pulls a heavier load when cranking the engine, and the big engine with possibly higher compression? Would a stock 60 amp alternator handle all this? Or should I be looking at a 95 amp alternator???

Murray said
#1- check the condition of the battery with a load tester. If the battery is good, then #2- check the charging system. If it's working, then #3- really set the timing with a timing light, no guessing. Tell us what you find.

Took the car to Auto Zone. Nobody had ever seen a battery in a trunk before. They dutifully hooked up their hand held computer load tester thingy and it said my battery had 0% charge. I said so it shouldn't start then if it's completely dead. Right? She agreed. So I started the car for her. She called the Manager. He was just as useless as his employee.

So I left and went across the street to Auto Zone. This guy liked the old car but really couldn't be of much help either. His hand held load tester thingy said the battery had 575 amps. He THOUGHT my battery should have 800 but wasn't sure. He couldn't tell from the part number and it's not spelled out plainly on the sticker on the battery like it's supposed to be. So he assumed the battery was low. The electric fan had kicked on and run for a few minutes and I had driven across the street so maybe that's why the battery was low? So this guy couldn't swear ot was the battery or the alternator or the voltage regulator. I should have stayed home and studied the inter-web some more.......:BangHead: