fan delay on make timer to help start up for ac generator

I added a delay timer, that was suggested by another forum member, which required a resistor be added to specify the delay time. It appears to be no longer available unfortunately. It was added to the fan control fed from the thermostat. The only time it was used was during initial power up of the AC. On a side note, it would be easy enough to simply add a fan on/off switch that would allow you to turn it on yourself after the compressor is on line.