wire through a relay so lights can only be on if side lights are on taking the relay coil feed from side light circuit. Plus a switch in coil feed of relay to switch off if you want to. Fuse at 3 amps power from battery as close to battery as possible. I used 10 amp wiring for feeds so I can upgrade to Cree lights later on. The cheap chinky lights I use also as machine lights on lathe and miller using a 12 volt supply.