Yamaha Analog Tachometer Help

[Lowriderdave]

I just purchased a yamaha analog tachometer for my yamaha outboard 2 stroke 50TLR. Also, I have the single ignition switch at the console. I found that most of the wires match except for two the come off the oil and temp on the tach. There is a harness connecting everything on the tach, but not at the key switch, still 2 wires are matching that come off the ignition. Is there a harness under the cowl, or do the lights dont work?

Bsically, there are 2 wires in the tach harness that I cant find a mate to.

Thanks, if you need a better explanation, I can put pictures up.

[boats.net]

You will need the trim/oil harness 6Y5-83653-00-00 that conects gauge to engine for the warning lights. It plugs to the 4 prong connector on engine.