Well, MS2 doesn't have a hardwired dedicated fan control, you can add a 2n222 transistor to (I forgot which one I used) one of the 3 LED's and set it to turn on at a temp point and off at a temp point and wire it to a relay. The setup is super easy in Megatune. It works with my sim card. I made a controller box to PMW my fan below meltdown, and incorporated a relay so if it fails, MS can step in and save the day.
Lonestar Classics Forums • View topic - Using my other hobby.
For 40 bucks or so, you can get a simulator that has an oscillator that acts like a distributor signal. An it has 5 or so pots that pretend to be the air temp sensor, coolant sensor, O2 sensor, tac speed, and throttle position. With this, you can simulate all of the sensors to verify that the box is working.
If you wanted to, you could set a relay to turn on the blinker if the RPMs were above 5000, water temp is below 200, and atmospheric pressure is above .95 KPa. That's what I like about MS.