So my 100 was originally ordered to Hawaii, which incidentally has caused some peculiarities. Today I'm having the radiator replaced as it was leaking, and I asked the mechanic (Robbie / powderpig LC expert) to replace the heater t's while he was replacing the radiator. He just informed me that I have none because I don't have the auxiliary heater which I should have made that connection already as I don't have rear heat. I also do not have heated seats which as far I as I can tell is one of the only US 100s without out it. I knew something was different about mine when I went to register as an owner on the Toyota website, and they don't recognize my VIN due to it being ordered to Hawaii originally. I guess the heater t's are one maintenance item I can stop worrying about 
