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12 volt conversion questions

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  • Roscomacaw
    replied
    What CAN screw up these old brake lite switches is converting to silicone brake fluid. But 12 volts shouldn't bother it at all.

    Miscreant at large.

    Leave a comment:


  • N8N
    replied
    yeah what Sonny said. Seems like after 40-50 years those brake light switches eventually stop working. Good news is it's an available, inexpensive part.

    good luck,

    nate

    --
    55 Commander Starlight
    62 Daytona hardtop
    http://home.comcast.net/~njnagel

    Leave a comment:


  • Sonny
    replied
    quote:Originally posted by gotti210

    will the brake light switch be affected when you convert the 6 volt pos grnd to 12 volt neg ground

    we drove the car across town today while it was still 6 volts and my wife followed me she said brake lights worked

    after we had the alternator and voltage drops and everything else installed and i went to drive it back across town to go home she said they were no longer working i dont understand why

    i had already changed out the old 6 volt bulbs and was running 12 volt bulbs 6 mos prior to the conversion

    after further inspection the tail light do work but no brake lights

    could the 6 to 12 volt change have fryed the brakelight switch or could a polarity change need to be done as well at the switch

    hummmmm its definately got me stumped
    any ideas guys
    Nope, the brake light switch doesn't care what voltage you're putting through it, it's just a pressure switch. I'd look at the wiring, mebbe you knocked something loose when you were doing the change over. It's just a hot wire, (constant), through the switch to the lights.

    Heck, those old brake light switches fail without warning many times. It might have been weak anyway. It's down on the end of the master cylinder, two push-on terminals, easy to pull, clean/check. If you clean the area off around it real good than unscrew the old one and screw the new switch in right away you don't even have to bleed anything! You might even want to just go ahead and replace the thing anyway. They're at any parts store for about 5 bucks.

    Sonny
    http://RacingStudebakers.com

    Leave a comment:


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    Guest started a topic 12 volt conversion questions

    12 volt conversion questions

    will the brake light switch be affected when you convert the 6 volt pos grnd to 12 volt neg ground

    we drove the car across town today while it was still 6 volts and my wife followed me she said brake lights worked

    after we had the alternator and voltage drops and everything else installed and i went to drive it back across town to go home she said they were no longer working i dont understand why

    i had already changed out the old 6 volt bulbs and was running 12 volt bulbs 6 mos prior to the conversion

    after further inspection the tail light do work but no brake lights

    could the 6 to 12 volt change have fryed the brakelight switch or could a polarity change need to be done as well at the switch

    hummmmm its definately got me stumped
    any ideas guys
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