1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

Cigarette Lighter Wiring

Discussion in 'Early CJ-5 and CJ-6 Tech' started by Renegade ll, Jun 16, 2019.

  1. Jun 16, 2019
    Renegade ll

    Renegade ll Member

    Thayne Wyoming
    Joined:
    Feb 17, 2013
    Messages:
    370
    I have the original cigarette lighter for my 1971 cj5. It came with the jeep. However it was not wired to a power source. Can I just run a wire to a hot post on the firewall with an inline fuse? I think it grounds itself when screwed into the dash. Any help is appreciated.

     
  2. Jun 16, 2019
    scoutpilot

    scoutpilot Member Sponsor 2019 Sponsor

    Asheboro, NC
    Joined:
    Jun 7, 2014
    Messages:
    239
    If it has only the one post center-rear, yes it does ground to the dash. However, you should hook the power to an accessory post on the ignition switch. An inline 20a fuse is a good idea.
     
  3. Jun 16, 2019
    Cowboyjeeper

    Cowboyjeeper Member

    Show low az
    Joined:
    Mar 5, 2019
    Messages:
    255
    You can hook it to accessory if you want it to power off with the key

    Or if you want to be able to use it with the engine off wire it to a constant hot
    Both with a fuse of course
     
  4. Jun 16, 2019
    Twin2

    Twin2 wasn't me Sponsor 2019 Sponsor

    Virginia Beach, VA
    Joined:
    Apr 28, 2011
    Messages:
    3,804
    you can pick up power at the light switch 12V hot . before breaker . yes use a 15A fuse
     
  5. Jun 16, 2019
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

    Tantallon, Nova...
    Joined:
    Nov 22, 2003
    Messages:
    5,806
    That's an awful load on an accessory switch position, stock in every vehicle I've ever been in (back when they came with cigarette lighters) was to a constant hot source, not switched.

    Now these days there are switched "accessory" outlets but if you were to ever plug a lighter into them (assuming they have the little tabby to hold the lighter in) you'll pop the fuse pretty quickly.
     
    70cj5134f likes this.
  6. Jun 16, 2019
    Cowboyjeeper

    Cowboyjeeper Member

    Show low az
    Joined:
    Mar 5, 2019
    Messages:
    255
    Could always just tie in to a battery pos with a inline fuse. Probably the easiest too unless you have to have it switched.
     
  7. Jun 16, 2019
    Mcruff

    Mcruff Earlycj5 Machinist Sponsor

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    4,889

    Most modern cars will have a 15 to 20 amp fuse in the cigarette/aux plug. A factory cigarette lighter back in the day would have had a 12 or 15 amp fuse. My factory lighter in my 71 had an in-line buss that was a 12 amp and it was wired live all the time.
     
  8. Jun 16, 2019
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

    Tantallon, Nova...
    Joined:
    Nov 22, 2003
    Messages:
    5,806
    Seems to me I've seen aux plugs labeled 5A maximum, but that may just be a drug flashback...:crazy:
     
    jeepstar likes this.
  9. Jun 16, 2019
    Mcruff

    Mcruff Earlycj5 Machinist Sponsor

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    4,889
    My car and truck are both 20 amp. There generally listed as power ports nowadays for charging laptops and such.
     
  10. Jun 16, 2019
    NCRenII

    NCRenII yellow fever Sponsor

    Far Nor Cal
    Joined:
    Sep 22, 2017
    Messages:
    395
    I believe in a 71 the cigar lighter is 10 a fuse from the fuse block
     
  11. Jun 16, 2019
    Mcruff

    Mcruff Earlycj5 Machinist Sponsor

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    4,889
    In 71 there was no fuse block. Why I said mine had an inline buss fuse with a 12 amp fuse.
     
  12. Jun 17, 2019
    scoutpilot

    scoutpilot Member Sponsor 2019 Sponsor

    Asheboro, NC
    Joined:
    Jun 7, 2014
    Messages:
    239
    Get a Zippo.
     
    Focker and baldjosh like this.
  13. Jun 17, 2019
    fhoehle

    fhoehle Sponsor Sponsor

    Harford Township, PA
    Joined:
    Apr 11, 2012
    Messages:
    803
    I bet they're banking on USB computer and phone stuff for a 5A rating, not a huge antique spotlight for shining deer or a hot coil of metal to light a nice, manly cigar with. Lol
     
  14. Jun 17, 2019
    Renegade ll

    Renegade ll Member

    Thayne Wyoming
    Joined:
    Feb 17, 2013
    Messages:
    370
    Thanks guys. I have a terminal block on my firewall. I will connect to the hot all the time with an inline fuse. Simplest way for me.
     
  15. Jun 17, 2019
    NCRenII

    NCRenII yellow fever Sponsor

    Far Nor Cal
    Joined:
    Sep 22, 2017
    Messages:
    395
    Yes, no fuse block on 71, fuse holder. Do check wire size to fuse rating. Don't want wire to become the fuse.
    for 15a use 12 ga, for 10a use 14 ga., 20a requires 11 ga. (or more common 10 ga).
    Many of the inline holders come with 2a leads for use with radios, etc.
     
    Focker likes this.

Share This Page

New Posts