The fuse for the brake lights keeps blowing because you have a short to ground somewhere in the circuit that the fuse is protecting. In the diagrams down below I have included the wiring diagram for the brake circuit which includes fuse 25 and a guide on how to track down a short to ground in an automotive electrical circuit. You will need to use a Digital Multi-meter [DMM] to do this so I have also included a link to a guide on how to use one, if you are unfamiliar with the tool down below:
Please go through these guides and get back to us with what you are able to find out.
Images (Click to enlarge)
Wednesday, October 16th, 2019 AT 6:33 PM