Hi Walrus
Yes, your stern to binnacle description is absolutely on the money. And yes, you can connnect the T pieces together in a gang or set. Top part of T pieces connected directly together in a nice little line. Perfect. I think most of them even have holes in them so you can fix them to a bulkhead etc with a self tapper. Keeps em nice and tidy up behind the dash.
I wouldnt even bother with trying to include the fuel level sensor. Waste of time, even if its free. And trying to piggyback it or sometihing off the flow sensor, well, just looking for trouble in my opinion!
The reason is that these level sensors just work off the electrical signal from the tank sender unit, and we all know just how rediculously inaccurate they are, hey! Thats why you are going for a nmea flow sensor, isnt it! (i think that the reason the Seppos like them is because their typical offshore boats have at least 500 litre tanks that are pretty deep, thus level sensors a bit more accurate)
Once you get the nmea fuel flow sensor going, you will be amazed at how accurate they are. I presume that the Garmin, like Lowrance, have the option to fine tune the accuracy if they are a bit out straight out of the box. This is called calibrating them, and after you calibrate a couple of times you will get accuracy less than 2% varaince from true. You will never loot at the tank level gauge again, trust me.
As far as a supplier goes, give Jon Eadie at Cleveland a call, hes a garmin stockist and canbet the bits in for you and advise as well. Jons contact details on Suzuki outboards website - jon eadie mobile marine/bayside suzuki. Tell 'im Grant recommended him if you do the deal with him!
Finally, make sure you put it in the fuel line after the racor filter. The one thing that stuffs them up is crap in the fuel that clogs the little paddle wheel up. So a really goood filter in the line befre the sender will be essential.
Cheers
ML
Cheers
ML