The fan is a Hunter. In the housing holding the pull chain is a 5-wire capacitor. I bought a pull chain switch 5-8 wire switch with a capacitors in it, brand Harbor Breeze. Will this replacement switch work if the capacitor in it is bad. Or where might I buy a capacitor for it. The capacitor is square with 5 wires coming out and connected to the pull chain switch.

It is easiest to obtain the correct replacement parts from Hunter. If the capacitor is bad, why are you replacing the pullchain?

Ceiling fan capactors - troubleshooting and resources - Ceiling Fans N More (http://www.ceiling-fans-n-more.com/ceiling-fan-capacitors.php)