Im helping a friend rebuild his dash. He has a 2004 Yamaha 150 without the NEMA port. Boat currently has analog gauges. 2 questions.
1. Can I simply replace engine harness and ECM to 2006 model to get NEMA capability? Are the harness's interchangeable. Ive read that some 04 and 05's had the NEMA port but needed the newer ECM.
2. If we don't go 1st route what does it take to use the Yamaha digital gauges? Do they connect where the analog gauges connect?
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