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Is it 6V or 12V?

Discussion in 'The Hokey Ass Message Board' started by Hogger54, Jul 25, 2013.

  1. Hogger54
    Joined: Jul 9, 2013
    Posts: 22

    Hogger54
    Member

    So I assumed this thing was 6V, but after looking at a couple light bulbs, I'm thinking differently.
    The tail lights had 1157 bulbs in them, that I looked up, and show as 12V.

    Is there a tell tale giveaway to let me know for sure? Is there anything in the pics that show?

    [​IMG]

    [​IMG]
     
  2. what battery is in it?
     
  3. Atwater Mike
    Joined: May 31, 2002
    Posts: 11,619

    Atwater Mike
    Member

    Read the tag on the generator. If still in doubt, count the battery cell fill holes and multiply by 2.

    Is this old 235 six in something 'year-different' or are all those relays & voltage regulator the ones that have been in use? (headlamp & horn relays look like the 6 volt types...)

    I don't see a ballast resistor in line with the coil + wire...another reason to "assume" 6 Volts.
     
  4. Hogger54
    Joined: Jul 9, 2013
    Posts: 22

    Hogger54
    Member

    I figured someone would go there.... No battery in it.

    It's in a 54 Chevy 3600. From the numbers, the engine is a 54 235. Couldn't tell you if the regulators and relays are stock or not.
     
  5. What does the coil have stamped on it?
     
  6. Hogger54
    Joined: Jul 9, 2013
    Posts: 22

    Hogger54
    Member

    There isn't anything readable on the generator.
    And the only markings on the coil are a -(neg.) and +(pos.) on the top terminals.
     
  7. MATACONCEPTS
    Joined: Aug 7, 2009
    Posts: 2,069

    MATACONCEPTS
    BANNED

    Its 12 volt. Go get a new 12v coil & a 12v One-Wire alt. & ditch the regulator.
     
  8. Hogger54
    Joined: Jul 9, 2013
    Posts: 22

    Hogger54
    Member

    How can you tell it's 12V?
     
  9. what is the generator? pictures?

    my guess it's still 6 volts and someone just put 12 volt bulbs in the taillights because 6 volt bulbs are getting harder to find at parts stores
     
  10. Atwater Mike
    Joined: May 31, 2002
    Posts: 11,619

    Atwater Mike
    Member

    The 1157 bulbs. Six volts wouldn't light 'em...
     
  11. 3 terminals on the regulater 6v 4 terminals 12v
     
  12. MATACONCEPTS
    Joined: Aug 7, 2009
    Posts: 2,069

    MATACONCEPTS
    BANNED

    If it is 6v now, eventually it's gonna be 12v after you're done dick'g around & a new extra $100 6v battery for nothing
     
  13. landseaandair
    Joined: Feb 23, 2009
    Posts: 4,485

    landseaandair
    Member
    from phoenix

    May have an internally resisted coil? Check to see if it has a voltage reducer to the fuel gauge.
     
  14. MATACONCEPTS
    Joined: Aug 7, 2009
    Posts: 2,069

    MATACONCEPTS
    BANNED

    This is how I found out my coupe is 12volts
     
  15. Hogger54
    Joined: Jul 9, 2013
    Posts: 22

    Hogger54
    Member

    Unfortunately there is no fuel tank. An I don't see anything other than the terminals on the back of the gauge. But they were already removed when I got it.

    [​IMG]
     
  16. MATACONCEPTS
    Joined: Aug 7, 2009
    Posts: 2,069

    MATACONCEPTS
    BANNED

    Yeah, Its 12 volt. Go get a new 12v coil & a 12v One-Wire alt. & ditch the regulator.

    get one of these altternators
     

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  17. Hogger54
    Joined: Jul 9, 2013
    Posts: 22

    Hogger54
    Member

    Cool, thanks.
    Any particular coil? Would it change anything if I wanted to go with an HEI distributor?
     
  18. rfraze
    Joined: May 23, 2012
    Posts: 2,009

    rfraze
    Member

    That IS NOT a one-wire alternator pictured. "One-wire" alternators have one connector where wire to battery is shown in pic and a black plug to close off the hole where the other two wires are shown in this pic. There are no connections for or wires to ignition or light. One 10 ga. (minimum) wire runs from that one pole (which is always hot)to starter lug or to battery positive. Charging begins above a certain RPM.

    This IS an alternator with an internal regulator.
     

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  19. R Pope
    Joined: Jan 23, 2006
    Posts: 3,309

    R Pope
    Member

    Aren't all "step-down" GM gen's 12V?
     
  20. MATACONCEPTS
    Joined: Aug 7, 2009
    Posts: 2,069

    MATACONCEPTS
    BANNED

    gO hEI
     
  21. MATACONCEPTS
    Joined: Aug 7, 2009
    Posts: 2,069

    MATACONCEPTS
    BANNED

    rIGHT.
     
  22. Hogger54
    Joined: Jul 9, 2013
    Posts: 22

    Hogger54
    Member

    Which coil should I get? Everything I search for, for my truck is 6 volt.
     
  23. Timberbeast
    Joined: Jun 28, 2009
    Posts: 74

    Timberbeast
    Member


    I've been using a coil from a12 volt beetle. Works well and dosen't need a resistor.
     
  24. Hogger54
    Joined: Jul 9, 2013
    Posts: 22

    Hogger54
    Member

    Gotcha. Thanks.
     
  25. rfraze
    Joined: May 23, 2012
    Posts: 2,009

    rfraze
    Member

    Hogger, There is a great source for Chev and GMC parts in Lebanon, OR called The Filling Station. (800-841-6622) Their on-line catalogue will help and you should get on the email list because the monthly newsletter always tells how to troubleshoot or fix something. Order and get a catalogue with it. They stock most of what they sell and are close enough to get parts quickly.
    LMC Truck (800-562-8782) is in Kansas and has both catalogues and pretty good prices. They are a big company with lots of items.
    Try these two and I am sure you will see later model six parts which will give you choices about which way you want to go, without actually having to go anywhere. Enjoy your ride.
     
  26. d2_willys
    Joined: Sep 8, 2007
    Posts: 4,322

    d2_willys
    Member
    from Kansas

    Check the numbers on the starter. That might tell you something. Also the horns might say something. The heater fan motor might also be a place to look. You could always hook a 12 battery to the heater motor and see if it sounds like a jet engine. If so, the motor is probably 6V.
     
  27. ezrods
    Joined: Jul 5, 2013
    Posts: 22

    ezrods
    Member

    Red label tag on the generator means 6v. Green label means 12V. Inspect coil for a stamping of 6 or 12. Batteries with 3 plugs are 6v, 6 plugs means 12v
     

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