The stock wiring and starter switch (assuming it's well maintained and not corroded) will take up to a 100/90 for headlight without mods, I used a 100/80, you have to use the relay mod in the shop talk and upgrade the wiring if you want to go higher. As for the spots, I added a 65 amp fuseblock (overkill) and a relay bank (relays and sockets that snap together with a slide to form one long relay block) for those and some other accessories (horns, etc. Horns are Porsche horns because the two bros sound a little like a Porsche, so I kept the theme

. I control the relays with a three switch reservoir cover mount that I got from HDL. One switch is used for each spot and the leftover switch I use to control power to a three socket cig lighter (also through a relay) that I mounted to my risers. You can use the headlight wire or the accessory wire as a relay trigger for the spots if you want, I just wanted individual control of them and so did not do that.