Originally Posted by
jamesmonter2
voltage measurement at F2 with the key forward and car turned off
battery voltage 12.09V
F2 with the fuse removed measuring directly at the port 8.42 voltage
noticeable voltage drop
Don't remove the fuse to take the reading. I think you might have measured the voltage on the wrong side of the fuse socket. You can measure the voltage at the fuse by placing your probe on the small slot on either side of the fuse value text [ - 15A - ] see the two dashes?