Hello all,<br /><br />My Mako 224 with a 2000 Yamaha 225 OX66 did not come with a Yamaha fuel management guage, I would like to install one. Not having one now how involved is it and will my existing Yamaha wiring harness work?<br /><br />Second question is on the Yamaha speed there is i fuel guage that is not wired into my tanks sending unit, what is involved in getting the Yamaha fuel guage to work on this?<br /><br />thanks!!!