Also using the SPAL fan-pwm controller. Have it mounted inside the fender behind the battery. Thiss is a VERY NICE controller. You can either use a SPAL temp sensor or tap into your stock temp sensor, and you program in the turn on temps yourself. Starts the fan off at 60% speed, and rampss up the speed as needed to maintain the "low" turn on temp. Goes to full speed when you hit the "high" programmed temp, or when you turn the A/C or defrost on. You tap into the clutch signal wire for the A/C compressor for the A/C input. and even then, it starts the fan off at 60% speed and slowly ramps it up to high speed. This is better on the fan motor and allows for longer fan life. And when you turn the A/C off, if the engine is below the "low" temp setting, it will slow the fan down to 60% fan speed before turning off completely. I'm running a 195 t-stat forr the winter months. Have fan set to come on at 200 degrees, and high temp is 215. The fan rarely even turns on unless I turn on the defrost with it programmed like that. I am using the SPAL temp sensor which is screwed into the extra port on the M1. Allows you to program the low and high settings closer to each other than trying to use the stock sensor. It's a bit spendy though at $120, but well worth it IMO.
