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Wild Wild West · 04-05-2019, 05:08 PM

Not sure on how much the capacitor costs from MSD, I usually get mine from work or go to the local Electronics store or online from where ever is the lowest cost. It is just a standard 25000 uF (micro-farad) 12 volt or higher rated capacitor. Most are rated for around 20 VDC.

A capacitor has a function of opposing a change in voltage of whatever circuit it is installed. It also acts like a battery, holding a charge for a short time. And it also acts as a buffer for the car's MSD power if you are running an alternator (remember it opposes a change in voltage) that may every so often output a voltage spike due to the regulator being flaky or a loose connection on the charging wire.

Kind of cheap insurance as a filter of power. I have one on my MSD box and on my delay box.

04-05-2019, 05:08 PM	#2
Wild Wild West Junior Member Join Date: Jan 2018 Posts: 6 Likes: 0 Liked 0 Times in 0 Posts	Re: MSD Capacitor Not sure on how much the capacitor costs from MSD, I usually get mine from work or go to the local Electronics store or online from where ever is the lowest cost. It is just a standard 25000 uF (micro-farad) 12 volt or higher rated capacitor. Most are rated for around 20 VDC. A capacitor has a function of opposing a change in voltage of whatever circuit it is installed. It also acts like a battery, holding a charge for a short time. And it also acts as a buffer for the car's MSD power if you are running an alternator (remember it opposes a change in voltage) that may every so often output a voltage spike due to the regulator being flaky or a loose connection on the charging wire. Kind of cheap insurance as a filter of power. I have one on my MSD box and on my delay box.