fuses

Just purchased a 2010 Tahoe from police auction, pros are that they kept all the top antennas attached so no holes in roof.(is there anything cool i can use them for?) but it won't start. when it powers on and i turn the key i just here clicking...

Getting no power to the panel on the drivers side door. Opened my window half way this morning and a moment later went to close it and nothing happened. The Auto door locks, windows and side mirror controls all are out. I have tried changing a 25 fuse or relay and tried changing the actual box...

I am hardwiring a radar detector in my 2010 Tahoe LTZ. I have already done so successfully, but I want to use a fuse that is "on" only in the accessory or run positions, so when the car cuts off, the detector does too. Every fuse I've tried so far (in the fuse box near the driver's door) seems...