OK awhikle back I posted about my ac working except on HI speed. Low and medium are fine, but this Arizona and they're not worth a crap. I replaced the switch, the relay, AND the fan. HI speed still doesn't work! Am I missing something here? My test light is less than desirable so it isn't helping me much. By the way, I ran a jumper from the battery straight to the fan (for hi speed). It runs great.