Looking at installing spotlights but only want them to work when I'm on high beam for my Prado 250 Altitude (I'm in Australia). I'm comfortable with wiring up a relay and things to make it go, but have no idea what I can tap into to know if the high beams are on. I was hoping for a high beam fuse (i think the older prados had it) but can't find one. Has anyone figured a way of doing this?