HVAC Blower wont turn off??

[salty_dog_68]

I was driving to work the other day and, while sitting at a stop light, I smelled some burning plastic and my HVAC Blower suddenly revved up. Now it wont turn off unless I pull the fuse or disconnect the battery. I replaced both the blower motor control resistor and the blower motor. Neither resolved the issue. I am at a loss where to look next. Climate control panel seems to operate normally. Obviously it is a short in a switch or fuse or something. Any ideas what else could have "blown out"(a relay or something)?

 

 

Thanks in advance,

 

ep

[richard wysong]

Welcome to the Forum! For it to have power when the key is off I would think that the relay is stuck. Was there any sign of melted wires at the resistor plug?