M27 install just finished, used a cheetah wireless system. I am using the power node because, I'm using positive and negative ground terminals in the engine compartment for power. It's hot all the time, not just when you start the engine. It's a BMW 328i and the battery's in the trunk. Because I used the cheetah it did not give me the same flashing sequence upon startup indicating the heads were being programed. If the heads were not properly programed because the start up sequence was interupted how would I know? When I start up the car, the remote display shows me a green light and a red light lit simeoultaniously. Occasionally, and very randomly the green light will go out for a second and then reapear. When the green light goes out, am I unprotected or, is it just a momentary loss of signal with the engine compartment? It might happen as a result of a servo or some other electronic applinace in the car car being turned on or off confusing the power node. Just an idea. Or is this occasionsal wink out of the green light normal?