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shielding of ingnition and injection wiring

Posted: Wed May 11, 2011 9:22 pm
by WHY
Was wondering, when shielding the ignition coil wiring is it required to shield the "contol/ground" wire and the frame ground wire as well (3 wires per COP ) or only the 12 volt positive lead, same question on the injectors, both control/ground and 12 volt positive or just the positive lead.

Tony :D