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Registered
Join Date: Feb 2005
Location: snowy mnts nsw australia
Posts: 40
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pertronix wiring 74S
I have bought a Pertronix Ignitor to replace my points in my 1974S.Went to wire it in but the instructions dont tell me what to do with the black & grey wires that that are on the the dizzy origionally.The supplied wiring diagram shows the red & black wires from the ignitor going to the coil but no explanation for the 2 existing wires.If anybody has installed or has a wiring diagramfor this i would really appreciate any help.
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10-05-2006, 10:18 PM
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Registered
Join Date: Jun 2004
Location: Rio Rancho, New Mexico
Posts: 1,325
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bede,
The original wires, black and grey, one goes to terminal C of the CDI box. The other wire goes to the tach. When I connected up the Pertronix I ran a red wire with a female connector from one of the switched 12 volt fuses, and a male connector on the red wire from the pertronix. I put a male connector on the black wire from the pertronix, and a female connector onto the existing wire that goes to terminal C of the CDI. The connectors are for a disconnect when I remove the distributor. So basically all you need to determine is which of the black and grey wires goes to the terminal C of the CDI box. The other wire goes to the tach. I'd connect up the tach wire after I got things running with the Pertronix. You have a choice of where to tap into the wire from the distributor to terminal C of the CDI box. Which ever end is convenient and neat. I hope this is the info you were looking for. Please post your results.
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DOUG '76 911S 2.7, webers, solex cams, JE pistons, '74 exhaust, 23 & 28 torsion bars, 930 calipers & rotors, Hoosiers on 8's & 9's. '85 911 Carrera, stock, just painted, Orient Red |
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10-06-2006, 07:05 PM
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Registered
Join Date: Feb 2005
Location: snowy mnts nsw australia
Posts: 40
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Thanks That is starting to make some sense.I will run the red wire from the pertronix to a switched wier at the fuse terminal near the cdi unit& i will join the other black wire to the wire at the dizzy that goes back to terminal C at the CDI.Then the tacho wire must join on the terminal C wire as well.Sounds good Cheers
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10-06-2006, 08:07 PM
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Registered
Join Date: Feb 2005
Location: snowy mnts nsw australia
Posts: 40
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Did exactly that hooked up the tacho wire as well & it worked perfectly.Had to re do the ignition timing it was out about 5 deg it is now running sweet Thanks for your help
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10-06-2006, 11:24 PM
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