I bought a Bayliner fishing boat last year, it came with a 4 stroke Mercury 115 HP engine, I installed a Vessel View system recently, I can see many data from the Lowrance LCD, but the there is no trim data, no water presure data, no water speed data, and no fuel level data, so I want to install all these 4 sensors, I checked and find 3 spare connectors, one 3 pins, one 4 pins and one 6 pins, but I can not figure out what to buy, anyone can help me? thanks!