NMEA 2000 with twin 5.7 mercruisers

[DjNiki4]

Hi guys

I just got a new to me 2004 Sundancer 300 It does have the smartcraft gauges as well
I am trying to get the engine data to show on my Garmin 742gps

I bough this smartcraft gateway from mercruiser but since I have two engines would I need an additional Y connector or not? Also where about is the location where the gateway needs to be plugged in?

Lastly what’s the best way to get power to your NMEA connection mines behind the gps

 

[Stee6043]

I'm not sure on your gateway but the kind I've looked at in the past (Fox gateways) connect directly to the engine ECM or diagnostic port. As such you'd need one per engine.

If you don't have an existing NMEA network onboard you'll need to buy a NMEA power adapter. It's basically a 12V connection on one end and the standard NMEA connection on the other. The NMEA network needs its own (switched) 12V power. You'll need a few T's and terminators too. Plenty of threads around here if you do a quick search. NMEA wiring has it's on unique characteristics. It's a bit unlike any DIY I had done before when it comes to the bits and pieces needed...

 

[ttmott]

Depends - did you get the CAN P or CAN H gateway? The CAN P (which is for engine data) is P/N 8M0105243
If you got the CAN P gateway you will need the WAKE harness duel engine adapter which will bridge between two Smartcraft junction blocks and connect the gateway.

 

[DjNiki4]

Depends - did you get the CAN P or CAN H gateway? The CAN P (which is for engine data) is P/N 8M0105243
If you got the CAN P gateway you will need the WAKE harness duel engine adapter which will bridge between two Smartcraft junction blocks and connect the gateway.

Yes I got the Can P 8M0054076

I got the data to show on my gps all works fine but I had to unplug one of the smartcraft gauges. Can you send me a link of why I need to get.

 

[DjNiki4]

Depends - did you get the CAN P or CAN H gateway? The CAN P (which is for engine data) is P/N 8M0105243
If you got the CAN P gateway you will need the WAKE harness duel engine adapter which will bridge between two Smartcraft junction blocks and connect the gateway.

Is it this

https://rover.ebay.com/rover/0/0/99?loc=https://www.ebay.com/p/1222273785?iid=352658176566