Yuck....an electrical question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Duallie · 04-14-2002, 03:25 AM

You don't need the "R" wire (yellow) anymore. It was used to give a full 12 volts to the coil while cranking. Then, after the engine started, the yellow wire would be turned off and the coil would be powered through the ballast resistor, which would knock off 3 volts or so to make the points live longer. The HEI gets a full 12 volts all of the time the engine is running. The old yellow wire can be cut off and eliminated.

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Just as if I knew what I was doin'

04-14-2002, 03:25 AM	#10
Duallie Registered User Join Date: Feb 2001 Location: Nikiski, Alaska Posts: 477	You don't need the "R" wire (yellow) anymore. It was used to give a full 12 volts to the coil while cranking. Then, after the engine started, the yellow wire would be turned off and the coil would be powered through the ballast resistor, which would knock off 3 volts or so to make the points live longer. The HEI gets a full 12 volts all of the time the engine is running. The old yellow wire can be cut off and eliminated. ------------------ Just as if I knew what I was doin' __________________ Just as if I knew what I was doin'

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