Distributor Tester

In my "spare time" I am building a distributor tester. I based it on this post from the internet
Build Your Own Distributor Test Machine For Under $100
I have it all together except for the plug wires
The first distributor I will put on it has a Pertronix IgnitorI module.
My question is Can I short the plug wires to ground, or should I run them through an actual gapped plug. I don't want to harm the electronic module @Mattax @Dana67Dart
(not intentioally leaving out any other electrical gurus.)
(Pertronix coil so I don't need a ballast resistor.)
Thank you

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Pretty cool. How do you measure RPM? I see no tach.

You can use some solid wire and loop it through all the plug terminals on the cap and then run that one wire to a plug. Or you can hook up plug wires and fire all 8 plugs.

What ever you do, never EVER test a Pertronix, a unilite or any complete ignition system without firing plugs or grounding the system like I first mentioned. You will kill the Pertronix or Unilte or the MSD box or whatever you’re testing. Even firing 7 and only 1 isn’t grounded will kill that stuff.