Yamaha - Digital Electronic Control Assembly, Twin/Main Station DEC Control 6X9-48207-23-00. Overview. This is the main control you run on a twin Yamaha boat. The one your hand's on all day. No throttle cables, no shift cables, nothing to adjust on one side to match the other. You move the levers and both engines respond the same way. After a while, you don't even think about it, which is exactly how it should be.. Features. • Twin-engine control for the main helm • Digital throttle and shift, no mechanical cables involved • Light, smooth lever movement • Both engines stay in sync instead of fighting each other • Genuine Yamaha DEC hardware. Compatibility. • Yamaha outboards with DEC • Twin-engine setups • Digital throttle and shift systems • Main helm stations. FAQs. How can I tell if my boat is DEC?If you don't see throttle or shift cables running back to the engines, it's DEC.. Is this for single-engine boats?No. This one's for twins and it's meant to be the main station control.. C