How to Install a Capacitor (with Pictures) - wikiHow Jun 12, 2011Connect the capacitor’s positive terminal. Whether you are connecting to the battery, amp, or a distribution block of some kind, you need to connect the positive terminal of the capacitor to the positive terminal of the other component by running a wire between them. Eight gauge wire is usually recommended. 570%(17)Views: 213K[PDF] Distribution Capacitor Switch - Powertec Distribution Capacitor Switch. RETROFITS TO EXISTING OIL SWITCH POWER SUPPLY & WIRING The new low energy mechanism allows the use of standard supply transformer imped-ances and existing 14AWG oil switch wiring.* COMPATIBILITY VerSaVac switches are compatible with exist-ing oil switch or vacuum switch installations.