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hotrodart · 10-11-2021, 03:35 PM

I have 3 SUN tach heads that require a box, and none are marked as yours is: "IGN SW" and "TRIGGER'. I would say that yours is a later model that does not require a box......just connect it as it says......ignition switch and distributor side of the coil (trigger). Remember to ground the head to your dash.

10-11-2021, 03:35 PM	#3
hotrodart Senior Member Join Date: May 2010 Location: Shenandoah Valley Virginia Posts: 220	Re: will this Tacho work on my Ford I have 3 SUN tach heads that require a box, and none are marked as yours is: "IGN SW" and "TRIGGER'. I would say that yours is a later model that does not require a box......just connect it as it says......ignition switch and distributor side of the coil (trigger). Remember to ground the head to your dash.