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DonaldSmith

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  1. DonaldSmith's post in I promise I read through all the past threads.... Pertronix confusion with pictures was marked as the answer   
    Here are photos of my installation, 6-volt, positive ground. 
     
    Ignitor in distributor:  Remove the points, condenser and wires.  The eccentric screw (to the right of the igniter) interferes with the igniter.  Cut back the igniter base or the screw.  The igniter has two little studs that fit in the screw holes for the points.  The two igniter wires have to fit where the one wire came in.  I cut out part of the grommet for the wires.   The black wire goes back to the ignition switch.  The white wire goes to the negative (-) post of the coil.  The positive (+) post has a wire going to chassis ground or battery (+) post. 
     

     
    Now, I have the M-5 semi-automatic transmission, so I was concerned with providing the ignition interruption for the shifting.  I called Pertronix.  They said, put a 7-ohm, 5-watt resister in the circuit from the PRI (primary) contact of the transmission relay to the negative (-) post of the coil.  this shorts out the ignition for the shifting, without frying the igniter. 
     
    I found a 7-ohm, 12.5 watt resistor from Mouser Electronics, an RH0107R000FC02, 3 bucks plus 7 bucks for shipping.  I checked with Pertronix and they said that 12.5 watt would be OK.
     
    So I have two wires coming out of the distributor, the black to ignition and the white-black to the (-) post of the coil.
    I have two wires to the (-) post of the coil, the white-black wire from the igniter in the distributor, and the wire from the 7-ohm resistor in the circuit back to the PRI post of the transmission relay.   
    I have one wire from the (+) post of the coil to ground. 
     

     
    A picture is worth a thousand words, but some photos need a few words to explain what's going on.   The (+) post to the left at the top has one wire to ground.  The (-) post has the thin white-black wire from the igniter and the wire to the resistor and transmission relay.  The resistor is mounted on the frame, on a heat sink.   Below the coil the thin black wire to ignition is somewhat visible.   (My photo got rotated from the position I wanted, sort of looking over the fender.  I hate it when that happens.)
  2. DonaldSmith's post in Mystery control on D15 dash was marked as the answer   
    The coils are for limiting the speed of the three-speed fan. 
     
    My Uncle Arthur drove a 30's car through the 50's, then bought a compact 60's Chevy. His comment:
     
    "Two-speed wipers, three-speed fan, don't know what a fella needs all that for."
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