Well as for the lights all the wires check out and seem normal no insane resistances or anything so my last hope for that is the floor switch. Charging well I havent touched on that yet other then checking wires which all seemed good.
Your YellowTop is fully-charged at about 13.0-13.2 volts. Please be sure to fully recharge it with a battery charger (and not your alternator) as soon as you can. At 11.78 volts, your battery is about 80% discharged. Whenever any lead-acid battery is discharged below 12.4 volts and is left sitting in that state, sulfation begins to form, which diminishes both capacity and lifespan. Jim McIlvaine eCare Manager, OPTIMA Batteries, Inc. www.pinterest.com/optimabatteries