Tach cluster install

[maxdsm]

Have a few questions about installing this tach cluster in my 1988 mighty max.
1. Where on the back of the cluster do I need to attach wires to the coil ? There is an ignition + and a ignition - on back of the cluster side . Do I need to run a wires from both to the positive and negative from the cluster to the positive and negitive on the coil ?
Note: I have a accel coil .
2. Msd makes a coil tach attachment shown below . Should I buy this to get it to work ? I added some links to show what I think I might need to get so it will work ?

https://ibb.co/jwYJKWg

https://ibb.co/59vzmWp

https://www.jegs.com/i/MSD/121/8918/...UaAv0NEALw_wcB


https://www.amazon.com/MSD-8920-Magn...27231974&psc=1