I installed one of Classic Auto Air's systems on my 65 Skylark. My question is; if you have used one of these systems how did you go about controlling it? The instructions included were minimal at best. The system came with the cables so the original climate control controls can be used. But there does not seem to be a way to control the fan speed. I know there are multiple aftermarket controllers and I am not opposed to using one. If anyone has any suggestions on one of these please let me know. Thank you for any advice you can provide. Joe