Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Swaping alternators

Discussion in '1969-1972 K5 Blazer | Truck | Suburban' started by smp, Feb 18, 2003.

  1. smp

    smp 1/2 ton status

    Joined:
    Jul 5, 2000
    Posts:
    708
    Likes Received:
    0
    Location:
    Florida
    I'm still running the old external voltage regulator and was thinking about swaping mine to a newer stlye altanator with the internal reg. and was wondering what it takes to do the swap.
     
  2. ntaj*ep

    ntaj*ep 1/2 ton status

    Joined:
    Feb 4, 2002
    Posts:
    3,248
    Likes Received:
    1
    Location:
    Evergreen state
    Easy squiezie dude!
    You just take the key on wire on your external reg. and extend it to your alt. assy. I can explain further a bit later, but there is nothing hard about it. /forums/images/graemlins/thumb.gif
     
  3. R72K5

    R72K5 Banned

    Joined:
    Mar 5, 2001
    Posts:
    8,905
    Likes Received:
    0
    Location:
    central IL
  4. smp

    smp 1/2 ton status

    Joined:
    Jul 5, 2000
    Posts:
    708
    Likes Received:
    0
    Location:
    Florida
    Wow doing a search what a concept /forums/images/graemlins/grin.gif It's amazing how i sometimes forget that there are more usefull things out there on the web other than CK5.
    Thanks guys /forums/images/graemlins/thumb.gif
     
  5. Triaged

    Triaged 1/2 ton status

    Joined:
    Feb 21, 2001
    Posts:
    3,808
    Likes Received:
    0
    Location:
    CA (LA/OC area)
    [ QUOTE ]
    Wow doing a search what a concept /forums/images/graemlins/grin.gif It's amazing how i sometimes forget that there are more usefull things out there on the web other than CK5.
    Thanks guys /forums/images/graemlins/thumb.gif

    [/ QUOTE ]

    There are other sights on the internet other than CK5 /forums/images/graemlins/confused.gif /forums/images/graemlins/confused.gif /forums/images/graemlins/confused.gif
     
  6. Burt4x4

    Burt4x4 3/4 ton status

    Joined:
    Feb 17, 2000
    Posts:
    6,854
    Likes Received:
    0
    Location:
    California (Modesto area)
    FYI~
    When I did this all I did was buy a HighAmp one wire alt and simply hooked the one wire to the + of my main batt and left the external regulator in it's factory configuration, didn't add or remove anything..
    Oh the alt I bought is a PowerMaster 140amp, works GREAT!!
     
  7. conoverbandit

    conoverbandit 1/2 ton status

    Joined:
    Jan 23, 2002
    Posts:
    452
    Likes Received:
    0
    Location:
    Conover N.C
    Ok, When I did this I got the info from 67-72chevytrucks.com
    But anywho, You make 2 "jumper wires" with spade terminals and go as follows: 1to3 and 2to4 I had a pic of it so it was'nt confusing, but I could'nt find it.Just unplug you external regulater and jump wires as shown and mine works fine.Then exchange the alt. hook up plug. hope this helps,

    Conoverbandit
     
  8. therobzilla

    therobzilla 1/2 ton status

    Joined:
    May 15, 2001
    Posts:
    1,307
    Likes Received:
    0
    Location:
    Gilbert, AZ
    Shane,

    The only thing to remember is that when and if you swap the alternator to a high amp one, the factory gauge will only work on alternators that are below 60 amps, if you jumper the pigtail like the previous post states, and you use a larger alternator more that 60 amps, it will fry the factory gauge. No biggie, I fried mine and just hooked up a volt meter, it works better than an amp gauge anyways. Standard factory amp gauges are not made for the larger amp's.

    Rob
     
  9. smp

    smp 1/2 ton status

    Joined:
    Jul 5, 2000
    Posts:
    708
    Likes Received:
    0
    Location:
    Florida
    Sweet, thanks for all the info /forums/images/graemlins/thumb.gif
    After having my external regulator fall off the core support and ground out i figured its time to upgrade into the 21st century /forums/images/graemlins/laugh.gif
     
  10. jeffer

    jeffer 1/2 ton status

    Joined:
    Nov 6, 2000
    Posts:
    113
    Likes Received:
    0
    Location:
    Loveland, Colorado
    I swapped in a used internally regulated alternator from a mid 80's truck. I also did the jumpering scheme described above. If you want to spend $15 you can get a kit that has a premaid jumper plug for the regulator harness and one that plugs into the factory alternator harness. You can make all of this yourself, the kit is just cleaner (didn't know these were available until after I made my own.) Chevyduty has one. Painless makes alternater pigtails too.
     
  11. K5MONSTERCHEV

    K5MONSTERCHEV 1/2 ton status

    Joined:
    Jan 27, 2003
    Posts:
    3,254
    Likes Received:
    0
    Location:
    Castro Valley, CA
    Im with Burt, I just went down to the auto parts store bought a 1 wire alt. and hooked it up to the battery, works fine!
     
  12. Robin

    Robin 1/2 ton status

    Joined:
    Oct 30, 2001
    Posts:
    184
    Likes Received:
    0
    Location:
    Georgetown, Texas
    Go to MAD for all the info you'd ever need about alternators and wiring. They suggest getting an alternator with 3 wire hook-up so you can use the sense wire to reference the voltage you use, not an imaginary 13.7 volts
     

Share This Page