John, thanks for your reply. I see that you provide quite a bit of feedback to posters.

As to the configuration of the fuse box, the lights are designated right and left, and low beam and high beam. As such, there are four, 8-amp fuses for the lighting system. However, when the high beams are activated, according to your math there should be 9.6 amps at the high-beam fuse, which causes the fuse to blow. Do you believe that testing with a fuse rated at 10-12 amps should be attempted, and if that works put in a relay?