Msd window switch
Feeling them should be plenty good but it is up to you.
P.S. Other ways would be to test with a volt meter to see if you get juice
(power not nitrous)at the noids, take it for a spin around the block.
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Did you split the wire for tach input? Maybe you didn't get a good connection of the original wire. Ideally you want to use a pair of automatic strippers that will just cut the insulation and open it up a bit.



