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Trimming dual engines with Zero Effort throttle control issue

Guest Contributor

We just finish rigging twin 300R with Zero effort throttle control and we can get only one (starboard) engine to trim, we used dual helm harness 8M0157213, looking at trim plug that comes out of Zero Effort throttle there’s 3 wires/prones and looking at dual helm harnesses receptacle there’s 5 wires/prones.

Obviously we are missing something, local dealer who rigged boat has no experience with Zero Effort controls and have no clue what’s missing, he tried calling Mercury and they said that things should be assigned with Mercury computer what he did,

someone please chip in so we can go for a ride?

thanks a million

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