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ACCEL Performance Group

ACCEL Performance Group Technical Service November 14, 2012 Tips & Tricks

Originally from ticket #5628.


I'm running a Unilite with an internal ballast, but I can find any spec on the resistant ohms. I don't have any problems with the spark but don't want any problems with the ignition module in the future. Would I better changing the coil to a Mallory 29219, the resistant ohms are 1.4 and don't need to run a separate ballast resistor ?

Thanks Andrew

When using a UNILITE there are a few guidelines to follow, for example: First you will need to know if your car has a resistance wire in the harness, if it does you can use a this wire or a ballast resistor. In most cases the resistance wire does not work that well. Next to make a determination if you need the ballast resistor or the resistance wire, you will need to know the Primary resistance of your ignition coil. You can find the primary resistance by using a multi meter set to the OHMS setting on the dial. Simply remove all the wires off of your ignition coil and measure the resistance between the positive and negative posts of the coil by placing the leads of the meter in the corresponding terminals on the coil. If your ignition coil has a primary resistance less than 1.4 it will need the ballast resistor or the resistance wire (YOU CANNOT USE BOTH) If your primary resistance is greater than 1.4 you will not need the ballast resistor or the resistance wire, and you can run your wires to the ignition coil. Hope this helps you out. The best choice of coil for your application is the 30450 with no ballast resistor thank you

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