All positive - negative and grounding buses installed - fully pre-wired Panels with meters include toggle switch for mounting up to 3 battery banks All panels with analog meters are owner upgradable to 24 Volts with 8240 or 8243 (18-32V DC meters) All circuit label positions are backlit on standard panels - No kit required \"ON\" indicating LEDs installed in all circuit positions DC 8 Position PN: 8023 White Switches All positive - negative and grounding buses installed « less