View Single Post
  #2  
Old 02-25-2007, 12:41 PM
Roncallo Roncallo is offline
88Black560SL
 
Join Date: Oct 2004
Location: CT
Posts: 3,510
Quote:
Originally Posted by KSLucas View Post
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.
8 amps. Are you sure thats the right size fuse. 55w @ 12V = 4.5 amps times 2 lights = 9 amps with the brights on thats 6 filliments going ~ 30 amps.

You will need to use relays. Use your 8 amp circuit to activate the relay and run higher fuesd power through the relays. Or just relay the highbeam circuit only, its probably safer that way.

John Roncallo
Reply With Quote