Headlight circuit question

[farm1810]

I was checking the wiring on the trailer I just built and accidently touched a parking light wire to ground while lights were turned on. No big deal, it blew the 15 amp headlight fuse. As I was doing this, I realized that the headlights and parking lights are on the same circuit. Never thought about it before. I have put a set of front parking light / turn signal housings / sockets on the rear to get a little extra light in the rear of the bike. So I got curious about how many amps I might be taxing that 15 amp fuse with. I have read that the headlight is about 7 amps. And that each parking light is about 2 amps. So 2 in the front, and 2 in the rear gives me 8 amps. Add the headlight, thats 15 amps. How can that be? I am assuming I have something wrong in my assumptions about amperage draw of these bulbs. Help??

[garyh8]

Farm1810, My 2000 RSTD owners manual lists the Headlight fuse as 20 amp. I rewired my driving lights so they are no longer on the Headlight circuit , by doing that I can now have my high beam and driving lights on at the time.

 

Gary