I have elected to install headlight relays from Marshall Larson in my 1955 C-300. He was not able to find 6-Volt auto-resetting breakers in the 15-20-Amp range but felt that another Club member might be or know of a source for these. I would rather use circuit breakers than fuses, so if you know of an appropriate breaker, please let me know about it. I'm not clear as to why a 12-Volt breaker won't work in a 6-Volt system, but fire-by-wire is a little outside of my area of expertise. Perhaps automotive circuit breakers are Voltage and current sensitive. My plan is to use one relay for high beams and one relay for low beams. I will place one fuse or breaker ahead of each relay. Thanks in advance. Rich Barber Brentwood, CA 1955 CCC 6-Voltas Rich Thanks for your order. I have not yet found 6V breakers but when I do I will post to the list. I believe that one of our members has a lighting business that includes automotive applications. I suggest that you post to the list for a source and ask him to reply to the list. I have designed these relays to be installed to control a single function. One relay for all high beam and one relay for all low beam. I estimate that each of the beams would use 1/2 of the total 90 watts. That would calculate to 12.5 amps per relay which would require a minimum of 15 amp. fuse. Minnesota Marshall Red G, 27 & 28 Dodge Brothers ------------------------ Yahoo! Groups Sponsor --------------------~--> Give the gift of life to a sick child. Support St. Jude Children's Research Hospital's 'Thanks & Giving.' http://us.click.yahoo.com/5iY7fA/6WnJAA/Y3ZIAA/8LmulB/TM --------------------------------------------------------------------~-> To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/