Sunpro Tach Install

[Shazam]

Hi guys. I'm installing a Sunpro tach on my steering column. I've set it to 8 cylinders and mounted it. Now for the fun part...

How do I tell the negative from the positive on the coil?

While the coil is disconnected would I benefit from a nicer aftermarket one (Accel or MSD)? The one I have works fine as best I know.

Any helpful hints on how best to do this other than following the directions?

Stupid questions, I know...but I'm trying to do what I can myself to learn my way around this wonderful machine. Many thanks.

 

[mylittlecj5]

Most coils are marked as to polarity right next to the terminals. OR you can turn on your key and probe with a test light. the one that makes the light bright, is the positive side.

 

[BusaDave9]

If you have the OEM connector on the coil then the wire on the right is ground. Left is positive.

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I wouldn't replace your coil unless you have to. When mine gave out I installed a MSD Blaster Coil for off road use.

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Most coils have a liquid center. This MSD Off road coil has a solid epoxy core. It handles vibration and getting bumped around better than other coils. It also puts out higher voltage for a stronger spark. My last coil failed because it got banged around so much the internal coiled wire shorted out.