Thank you all for the responses. The fan power comes direct from the alternator and is fused. The alternator does just fine with anything & everything except when those fans kick on. I have a Derale solid state fan controller that is malfunctioning. Factory says it went bad. The entire wiring of the car is suspect due to age (50 years old) and being gutted for racing. Let's put it this way. When I got it, there were wires run through freshly drilled holes in the firewall, without grommets to isolate a possible short. I fixed those. I went through everything I can see but there may be issues in places and disconnected stuff behind the dash which is extremely hard to access with the roll bars coming down on each side of the front seats, and a custom made panel from the center of the dash to the floor hump for a radio & aftermarket SunPro gauges. Except for the fuel gauge, the rest of the factory gauges are disconnected. No issue with a bulkhead connection to the amp gauge or anything. Even with seats removed it's a bitch. As stated, the battery is in the trunk with heavy gauge wires running to starter & engine ground. They put a kill switch through the rear bumper which may have been mandated by whatever class the car was raced in; however..............The kill switch doesn't shut off the engine like it's supposed to because it only kills the battery, the alternator keeps the engine running just fine! I use the kill switch as an alternator test switch which it does very well. I have added at least a half dozen grounds all over the car and sanded to bare metal everywhere to make sure the ground system works. I did put manual override switches to the electric cooling fans as a backup due to unreliable fan controllers. I keep an eye on the engine temp like a hawk. I have a different adjustable fan controller to install but lately I'm fed up with this electrical crap. I think I am going to try to find a shroud for a factory mechanical fan. Most problems with any newer car today is usually associated with electrical stuff. Too damn many computer controlled things. My older brother was an electrical engineer, so when I had a question about something I 'd ask him. Unfortunately, he doesn't live around the corner. I spoke with Summit Racing the other day and there are more powerful alternators available both internally & externally regulated. By the way, the battery was an Optima Red top for about 10 years, replaced last year with a Diehard Gold. I have also changed out the voltage regulator 2 or 3 times as well for purposes of trouble shooting, one was bad. No changes with any functionality on anything else.
The fans are run by a temperature sensor / or when I get fed up and flip on a manual power switch which I have for each fan.