My 95 yukon keeps blowing the brake light fuse. I

Short in your wiring or a bad relay.

check your Head Light Fuses I know for some reason that Happen to me and I had to replace my head light fuses. I would also check the circurt line out and make sure its getting power to it.

Try the specified fuses in the under hood fuse center. they are common to blow.

the obd 2 scanner power up at the 16 dlc terminal on the obd 1 type need cigarette lighter.

They use the same bulbs in the back.
Check the light sockets and wiring for shorts to ground.

You can find wiring diagrams at http://www.bbbind.com/free_tsb.html free ! Enter your vehicle info. year , make , model an engine size . Under system click on lighting , subsystem click parking lights . Do the stop lamps work ? Turn signals etc.... Which fuse blows ? Also check fuse box diagram under power distribution ,fuse box .to see what all that fuse powers

This all depends, if the fuse blows as soon as you put it in without stepping on the brake pedal then theres a dead short in the fuse box or the power wire going to the brake switch is shorting out, this 15amp fuse runs from the fuseox to brake light switch, so the short is between that but if it blow with brake pedal pushed then you said you dissconnect the rear brake light at fuse box and fuse still blows so the next step inwhich power is feed from this fuse is the following and you will need to unhook these components one at a time until short is gone. the next location is the the abs brake control module which is by the master cylinder area after that it goes to the cruise contorl servo also under the hood, then it goes to the shifter release solenoid which is very common problem, the wires melt or short out in that area, and next it goes to computer which i dont think is the problem and from there it feeds the rear lights and third brake light. hope this helps, good day.

Check the wiring where it connects to the socket for the bulbs in the brake lens and front turn singals

CHECK FUSES TO BRAKE AND ABS BRAKE SYSTEM.IF FUSE OKAY NO BLOWED BULBS. YOU HAVE A ELECTRICAL PROBLEM IN BRAKES AND ABS BRAKE UNIT.THE DEALERSHIP HAS TO FIX.

your problem is attributed to the turn signal switch , both the left and right turn signals go thru the switch as well as the brake lights , it is a common problem with these cars.