You do not need any expensive adapters to tap into the Yami gauges as you just in-line splice into the 'green' tach wire off each tach gauge.
i used the appropriate marine bullet connectors with an in-line bullet spice and was done in a couple minutes--very easy.
FYI, i had contacted Yamaha to see if an adapter exists, but they had no knowledge of one, and besides its easy and cheap enough to do without an expensive OEM part.
here's a link a splice similar to what i used>
http://www3.3m.com/catalog/au/en005/uti ... utput_html
i'd recommend to download the install manual off the Garmin website and study it and plan the install.
what most AP do not tell you about the install is about the hydraulic line. they spec the min. requirements and then you are off to decide from there.
i choose to save some $ and bought a AP hose kit from Teleflex and made my own lines using their stiff plastic lines and fittings from my local marine chandler. Definitely more time consuming to make your own lines. you can use anything from common rubber hydraulic lines and std fittings to brass or expensive stainless fittings and quick disconnects. I'd recommend getting stainless if you can but brass would be fine (avoid standard steel fittings as they will eventually freeze and may not be able to remove it later). Modern plastic hose is better than the much less expensive rubber hose lines as it should be more chemical resistant and is much thinner in diameter, but generally more stiff and difficult to with (the pre-made Teleflex or Uflex hoses are not stiff and fine for handling). Here's a link for brass quick disconnects >
http://www.discounthydraulichose.com/pr ... 700-xx.htm
if you go the pre-made hose route, you'll need to know the near exact length (a little over is fine, short and you're hooped) of the lines you'll need (Teleflex come in 2' increment lengths from what i can remember).
for the Garmin AP, you'll need 6 lines (2 long runs from pump to steering ram line, 1 short from helm to shadow drive, 1 from shadow drive to pump, 2 from helm to pump)
The 2.1L pump is not complicated--but i'd spend a bit more here on install to go with quick disconnects to speed and make the install much easier as the location of the pump and helm rear access is never ideal nor easy.
This is something to consider> level of difficulty for install 3 out of 5 IMO., and very time consuming as planning is key (i spent more time planning than installing!).
if you have no desire to do your own install consider a technician or shop that is NMEA200 certified as that i believe will lengthen your warranty by an additional year and should something break or fail, the repair including labor would be covered by Garmin.
Good luck, i think you've made a very good decision on getting an AP, i love mine and wouldn't have another boat without one.
