I am looking to install a Painless Cirkit Boss Auxiliary fuse block in the engine bay between the shock tower and the washer fluid tank and have some questions. 1) Based on my markups below, what size fuse is required for... The high beam circuit - Having trouble finding information on amperage for an oem headlight The low beam circuit The horn circuit - does it even make sense to run horn power from this fuse block to a relay? 2) Are the other fuse sizes reasonable? What have I messed up? Note max rating for each circuit on this block is 20 amp.