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Johnson 4 stroke and nmea

Old 05-24-2010, 06:30 PM
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Default Johnson 4 stroke and nmea

I am helping a friend connect (hopefully) his 2005 Johnson four stroke to the nmea network. I understand the Johnson is just a Suzuki painted white - is that right? Can we just use the suzuki interface to make the connection. The cable looks like the connector on the engine end is round. The connector we found that we think is the correct one is located on the boat side of the engine at the top of the block box holding on the wiring connections. However, it is square. Anybody done this before and know what to buy and do?

Also, the engine is a 2005 but the manufacture date is 2004. I have seen posts with people connecting zukes all the way back to 2002? Is this going to work at all?
Old 05-25-2010, 05:00 AM
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Any thoughts?
Old 05-25-2010, 05:33 AM
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I thought Suzuki's became NMEA more recently, and that Johnsuki's are all pre NMEA versions. I don't know for sure. Maybe repost the question regarding 2004 and 2005 Suzuki. Probably the Johnsuki's became compliant the same year as Suzuki.

I have a 2004 Johnsuki. I would be interested to know if is compliant..
Old 05-25-2010, 08:30 AM
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What I understand is that the Suzuki did not become nmea compliant until 2005 when they sought and obtained the certification from nmea. However, since suzuki used Lowrance to build the EMM for their four stroke engines from the beginning, the EMM in the engine has always been able to talk to an nmea 2000 network. Suzuki sold from day one their engine with add on digital gauges made by Lowrance which were the same as the LM200 that works with an nmea network. So, it is true, the Suzukis did not earn nmea "certification" until 2005 but that does not mean earlier engines with that EMM will not work - they are just not certified to work. If that makes any sense? Also, I have found over a dozen posts on this forum and others with people connecting their zukes to nmea and getting most if not all engine date for models in 2002-2005.

I have compared the parts diagrams for the 2004 and 2005 zuke 225 and johnson 225 and they have the same EMM part number and the same EMM plug. Therefore, I think the suzuki interface will work. What I was hoping to find was someone with a Johnson that had already tried it.

For what it is worth, my local dealer thinks it will work but admits he has little network experience.
Old 01-05-2011, 10:19 AM
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Default Did you find out the answer to NMEA/Johnson 140 hp question?

Originally Posted by duncha11 View Post
What I understand is that the Suzuki did not become nmea compliant until 2005 when they sought and obtained the certification from nmea. However, since suzuki used Lowrance to build the EMM for their four stroke engines from the beginning, the EMM in the engine has always been able to talk to an nmea 2000 network. Suzuki sold from day one their engine with add on digital gauges made by Lowrance which were the same as the LM200 that works with an nmea network. So, it is true, the Suzukis did not earn nmea "certification" until 2005 but that does not mean earlier engines with that EMM will not work - they are just not certified to work. If that makes any sense? Also, I have found over a dozen posts on this forum and others with people connecting their zukes to nmea and getting most if not all engine date for models in 2002-2005.

I have compared the parts diagrams for the 2004 and 2005 zuke 225 and johnson 225 and they have the same EMM part number and the same EMM plug. Therefore, I think the suzuki interface will work. What I was hoping to find was someone with a Johnson that had already tried it.

For what it is worth, my local dealer thinks it will work but admits he has little network experience.


Did you find out the answer to NMEA/Johnson 140 hp question? Thanks in advance
Old 01-05-2011, 11:55 AM
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maybe this thread will help

http://www.thehulltruth.com/marine-e...-can-done.html

good luck

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