A cap is used to provide clean power, not supply more amps to a system. You need to do simple calculations to determine your amp draw. That would be for all of your amps, headlights, and other electronics, then compare to the output of the altenator. If your are pushing the limit or exceeding it, a cap will do nothing but compete with your electronics. If you install a HO alt., you would also want to add a cap to smooth out the output, like spikes and valleys. If the amp suddenly draws a lot of amps, the cap will quickly provide that, when the alt kicks in and spikes the cap will absorb that. That is the purpose of a cap. in electronics, it does not generate any extra amps in a system. and btw 1/100 of a second is 10 miliseconds, which is a real long time in electronics....