1991 fxstc has twin tec ignition and accel super coil two connection points how do I wire ignition to coil

SOURCE: my stock coil has 1

That's because your new coil is probably for a "single fire" ignition system. Your original coil is designed for a "dual fire" ignition system. It depends on your ignition system. If your ignition system is a stock system, it's a "dual fire" ignition system. In other words, both spark plugs fire at the same time every time the piston comes to top dead center. This generates what is known as a "wasted spark" on the cylinder that is on it's exhaust stroke but Harley has used this system for many years and still does today. I'd suggest that you look up the part number of your Accel coil and see if it is designed for use with a single fire aftermarket ignition system. If your bike uses the original ignition system, see if you can return the coil in exchange for the proper coil. Be aware that some dealers and parts sellers will not exchange or refund on electrical parts.

Good Luck
Steve

SOURCE: i have a 1995 1200

You have the wrong coil for your bike. This coil is designed to be used with a "single fire" ignition system. If you have the stock ignition system on your bike, it is the original "dual fire" ignition. Harley has used a dual fire ignition system on all their bikes except a very few years ago. Try to exchange the coil for the correct one where you bought it.

Good Luck
steve

SOURCE: 1974 flh skipping when under

Check for the correct dwell on your points and for any vacuum leaks. Also, check the resistance on your plug wires, replace if needed.
I hope this helps.