Installing points conversion, and HEI System function, tests, and modification.

Discussion in 'Buick FAQ' started by LARRY70GS, May 13, 2012.

  1. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    Les, It has to go somewhere. You have to find the other end. I posted the schematic above. Looks like it ends at some sort of plug on the firewall, #6 position?
     
  2. Les Modrow

    Les Modrow Gold Level Contributor

    Larry, any suggestions how to eliminate it? les
     
  3. Les Modrow

    Les Modrow Gold Level Contributor

    Larry, If I find the other end and take it out of the #6 plug and take it out of the ignition switch and run a single wire from the ignition switch to the #6 terminal at the bulkhead? Les
     
  4. Les Modrow

    Les Modrow Gold Level Contributor

    Larry, I looked at the diagram closer and it looks like it goes through the firewall and comes out just a single brown wire to the plug on the voltage regulator. I am not using the voltage regulator and it is unplugged. I have a alternator with a built in regulator. Can I run a separate wire from a run source to the coil? If so, What do I do with the pink wire on the + side of the coil. Leave it or remove it? Thanks again,Les
     
  5. Lobucrod

    Lobucrod Well-Known Member

    Not to change the subject manner of this post but there are three reasons I don’t like the one wire alternators. One is that when using them you loose the function of the idiot light. Two, to regulate the amount of charge needed they read voltage at the alternator itself instead of at the battery. This usually results in a lower charging voltage being present at the battery itself (But they maybe they’re calibrated to charge at a slightly higher voltage to compensate for this?). Three, they may not start charging at idle and require more RPMs in order to kick in.
     
  6. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"


    Les,
    I don't have a wiring diagram for the engine side of the firewall. Looking at the diagram I posted though, it looks like the resistor wire runs from the ignition switch to the firewall. I would unhook it from the switch, and then run a 12 gauge wire directly from that terminal on the ignition switch to the + side of the coil, DONE. As far as the pink wire, you need to trace that back to the firewall. That wire probably joins a wire from the "R" terminal of the starter solenoid. I would eliminate that wire. Trace that pink wire back and see where it goes.
     
  7. Quick Buick

    Quick Buick Arlington Wa

  8. Quick Buick

    Quick Buick Arlington Wa

    Im a little lost on this 67 gs/sky..
    The B W S ( resistance wire 10 ohm) coming off the ACC on the ignition switch is a normal vinyl not the braided wire like in pic in post 35.
    Am I suppose to remove the B W S wire under the dash. From the ACC post -to - #4 on the firewall connector? Then replace with a standard 12g wire?
    That does not look fun. Is there another keyed 12v power wire under the hood that could be used?

    wiring diagram in above post 47
     
    Last edited: Sep 6, 2020
  9. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    Is it possible someone already removed it? Are you the original owner of the car? Do the resistance wire tests reveal that the resistance wire is there/working?

    I would not try to replace it if it was there, I would just run another wire and jump it out, you know where the 2 end points are, just run another wire and tape off the ends of the original.
     
  10. Quick Buick

    Quick Buick Arlington Wa

    I got 3 under dash harnesses, & 3 under hood harnesses. all 67 a-bodys
    I was going to swap harnesses & upgrade the resistance wire.

    1) Is a removed harness It clearly has the brown with white stripe Vinyl. This is a under dash harness.

    Interesting news...
    2) Is in the blue car ( no motor in car) in my sig..(something may have been done by a PO) I can barely fit my head under dash, with my glasses noway.. Used a borescope and can see the wire is white with a stripe. cant tell if its cloth or vinyl...When I bought the car it came with a MSD ready to run list. I cant remember if I checked voltage in the run mode... This cars under hood harness is ugly..

    3) Is in my green running parts car.. I will check the voltage& wire under dash on that one in a while ( charging battery ). This under hood harness is in great shape...
    FWIW I have not tried to stick my head under dash to see anything... I have a great neighbor kid that I'll get to to do that.

    I do have another engine harness coming in the mail that looks much better than the on my blue car..
     
    Last edited: Sep 6, 2020
  11. Quick Buick

    Quick Buick Arlington Wa

    Never mind I found the braided wire. Its were it should be under the hood.. (blue car).
    The guy that put the MSD RTR dist in never changed the wire...
     

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