When i was with middletown ct OEM i built there truck 5. I put on a fully loaded centurion. 6 rotar red/white front. white had an amber half filter to the rear. front corner strobes, center leds red and cruise lights in red
the Power Supply is encapsulated. Maybe the EB6 if its the EB6 it should do patterns
refer to page 7 https://www.whelenmassnotification.com/wp-content/uploads/2020/08/13216.pdf
sl6 https://www.whelen.com/wp-content/uploads/2020/08/13142.pdf