I recently had an issue with regular intermittent 3 amigos so I read as many of the posts as the brain would allow and tried the bypass wiring to the shuttle valve solenoids and only made it a constant 3 amigos, so I swapped the shuttle valve solenoid from another d2 that I have and the problem became intermittent again . I then purchased a new shuttle valve solenoid and fitted it with the bypass and seemed to tamed the amigos no lights for 6 weeks now . Doug