Any of you guys know how to hook up a tack to my 50hp 4 stroke yami outboard? I bought a Yamaha tach but the tach has 2 square plugs and a few socket type plugs on it and my shifter has a bunch of socket type plugs on it. I'm guessing that the plugs on the shifter should somehow match up to the plug ins on the tach?? Anybody know what color goes to what?? or do i have to go to the stealers and get some kind of adapter plug for the whole mess. couple of pics to show ya what i've got. Thanks in advance for any help.