I recently bought a '68 GS400 and am currently under restoration. My mechanic and I found that the power to the heater/AC switch had been disconnected. We reconnected it and found that the blower motor stays on all the time. It appears that I am getting 12V on all the contacts on the switch when power is connected. Is this a bad switch, or is something else going on here? And if its a bad switch, does anyone sell a replacement? The switch has both power and vacuum connected to it. Thanks!