I upgraded the stock headlamps on my '73 450SL to Hella's 5 1/4" H4 (60/55 W) and H1 (55 W) lights, which the Mercedes part's dealer said were direct replacements. The 8 amp fuse won't take the load. The low beams work fine. However, activating the high beams blows the fuse. I know I've seen this topic discussed before, but I can't locate it. Any info on how to resolve would be appreciated.