Definitely no on grounding the coils to alternator case. Proven reliable method is cylinder heads across installation of these coils on many and varied applications. Sensor grounds absolutely to sensor ground. Twisting the wires is good, especially VR. More important is probably his unshielded signal wire.
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'65 Tempest 467 3650# 11.30@120.31
Last edited by Scott65; 05-04-2021 at 08:50 AM.
Reason: Addition
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