[Whaler]

Hello Pete
I am glad an electrical guy jumped in to answer this.
Here's something to think about. I went back out to the garage this morning to troubleshoot this a little more. I also had bought 20 and 25 amp fuses for trial.
For history sake I have yet to ever leave the car's battery hooked up on the positive if its going to sit parked in the garage. Well last night I left it hooked up.
Today I turn on the keyswitch to see if I can run the fan manually and I get nothing? I also notice my voltage gage hardly even budging. It usually jumps to battery voltage.

So surely I checked the battery with my meter and have 6 volts????? Optima redtop

Battery is on the charger for now.

Standing there and scratching my head I wonder where to start.
Obviously I have a load when the battery is connected. So for first test I hook up the charger to the battery cables on the car to chaeck for a current flow. With the key switch in off I show .35 amps. With the keyswitch on I show about .7 amps
Now I test that fan in manual and I get about 8 amps draw dropping to 7.5
I stab the brakes and I show a 5 to 6 amp draw for brake lights.

Next I look to the fuse panel and start to remove and replace fuses one at a time looking for a difference. Trying to determine what cct is drawing this current?

Is this a coincidence that my battery drained overnight just after replacing that fuse, or is it simply I have another small problem. Funny thing is the battery took little time to recharge to 11 or 12 volts. A load test may be another story when I go to start it

It has in the past been left connected overnight when it was in the alignment shop at a dealership for 2 days. No drain then.

How would you troubleshoot this Pete? Its pretty simple harness not alot of loads/ccts. What should a car be drawing if there really is nothing on parked and ignition off. I have no radio or clock. No alarm.

*As for the fan I have put a 20 A. back in and will see if it lasts. Forgot to mention that yesterday on initial checks for the fan, the 30 amp relay in the thrermostat unit didn't seem seated all the way. Thought imediately that was the problem, but it was the fuse afterall

Tim