Merc Racing 525EFI Diagnostic plug
 

https://cimg2.ibsrv.net/gimg/www.off...c8e4f5c9cd.jpg
https://cimg2.ibsrv.net/gimg/www.off...997db99d53.jpg
I am trying to hook up VesselView mobile to my 2003 Merc 525EFI it says its smart craft compatible. I have the yellow transistor end plug....
When I plug in the VessleView Mobile there isn't any power to the unit. Has anyone else seen this or doing a diagnostic on these motors??
Thanks in advance

Anyone know where that 3 wire plug goes?

It is for twin engine setup. Only 1 Engine makes the power for the Smartcraft.
https://cimg9.ibsrv.net/gimg/www.off...f57c3325ff.jpg

It’s a single.

now you have the answer. Put it together and you smartcraft network works fine.

Thanks Mike
i will check it out when I’m at the boat next.