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.

Charging question

Discussion in 'The Garage' started by joshua632, May 23, 2005.

  1. joshua632

    joshua632 Guest

    I'm sure this has been covered enough but when I did a search I couldn't find exactly what i needed, So here we go again. I have a mutt of a truck that consist of a 86 k5 frame, 77 K20 Drivetrain, and a 92 S10 my problem comes from the wiring (which is definately my weak spot). Anyway I am running the stock style Alt. off the 77 K20 I know that is good because I have had it tested. I have the post on the back wired straight to the the battery the fat red wire (which is to the left if you are looking at it from the front) wired to a hot with key and the thiner black wire (which is to the right if you are looking at it from the front) looped around to the post on the back. I know it is charging because the back is magnetic when it is running and I can disconnect the positive battery cable and i stays running. If any of this sounds wrong chime in and help me straighten this part out. The problem is that if I let this truck sit for any amount of time It kills the battery. I have tried searching for a draw with a test light and pulling fuses and found nothing. Any ideas? Is it just wired wrong? or maybe as simple as a bad battery? Thanks in advance and sorry this post is so darn long! :cool1:
     
  2. pauly383

    pauly383 Daddy383 Staff Member Moderator

    Joined:
    Jul 22, 2001
    Posts:
    16,217
    Likes Received:
    1
    Location:
    Mesa , Arizona USA
    Which trucks wiring are you using ?
     
  3. joshua632

    joshua632 Guest

    I was trying the use the s10s wiring but gave up on that when I was have charging issues. So now I'm using 10 gauge wire from the Autozone for the constent hot and I've tied into the blower motor wiring for the hot with key.
     
  4. Boondocks

    Boondocks 1/2 ton status

    Joined:
    May 10, 2005
    Posts:
    129
    Likes Received:
    0
    Location:
    Massachusetts
    It sounds like you have the alternator exiciter wired to the battery, which would kill the battery when it isn't running.
     
  5. joshua632

    joshua632 Guest

    Well I thought that might be the case but when I switch them The truck stays running after I shut it off. :( Like I said this is definately my weak spot!
     
  6. pauly383

    pauly383 Daddy383 Staff Member Moderator

    Joined:
    Jul 22, 2001
    Posts:
    16,217
    Likes Received:
    1
    Location:
    Mesa , Arizona USA
    I don't have any near me , but can e-mail a diagram tonight if ya pm ya an address . Then ya can just wire it like it should be .
     
  7. joshua632

    joshua632 Guest

  8. Boondocks

    Boondocks 1/2 ton status

    Joined:
    May 10, 2005
    Posts:
    129
    Likes Received:
    0
    Location:
    Massachusetts
    Have you verified that the battery will hold a charge if not connected?

    I had an Optima short internally once, but I couldn't event jump start the truck with it in there.

    When you said "the black wire is looped around to the post on the back" did you mean ground, or battery?
     
  9. joshua632

    joshua632 Guest

    battery
     
  10. pauly383

    pauly383 Daddy383 Staff Member Moderator

    Joined:
    Jul 22, 2001
    Posts:
    16,217
    Likes Received:
    1
    Location:
    Mesa , Arizona USA
    U got mail .
     
  11. 4trolls

    4trolls 1/2 ton status

    Joined:
    Nov 13, 2002
    Posts:
    190
    Likes Received:
    0
    Location:
    vancouver wa
    if you pull the lead on the batt. with the engine running it can fry the diods in the alt. which will cause the juice in the batt. to back feed through the alt.
     
  12. 4trolls

    4trolls 1/2 ton status

    Joined:
    Nov 13, 2002
    Posts:
    190
    Likes Received:
    0
    Location:
    vancouver wa
    if you pull the lead on the batt. with the engine running it can fry the diods in the alt. which will cause the juice in the batt. to back feed through the alt. when its shut off which will drain your batt.
     
  13. R72K5

    R72K5 Banned

    Joined:
    Mar 5, 2001
    Posts:
    8,905
    Likes Received:
    0
    Location:
    central IL
    the smallest wire on the alt runs to guage or light in dash, not to battery

    the two red wires connect to battery direct, will work fine
    you can loop the red spade end wire on side of alt to the post on back of alt with the other red wire, turns it into one wire alt plus the light/guage wire
     

Share This Page