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Author Topic:   Yam wiring help
waltuh posted 10-04-2002 09:01 PM ET (US)   Profile for waltuh   Send Email to waltuh  

Could use some help with the wiring hook-up in switching from a Mercury to a Yamaha. I've removed the old Merc 90 2 stroke & deck mount throttle and replaced it w/ a Yamaha 90 2 stroke (in better condition) w/ a side mount throttle & a Yamaha 3" guage w/ rpm-oil-overheat that took the spot of the old rpm guage. The boat is a '95 18 1/2 ' center console and came factory rigged w/ the Merc. The Merc had a big fat black wire w/ a multi-pronged plug that went to the motor and this obviously was disconnected when the Merc was removed. The Yamaha also has a similar main wiring harness wire albeit w/ a different style multi-prong plug however the Yam big wire goes to the Yam side mount throttle control as opposed to the fuse block. So far-so good, with the motor-side throttle control & guage installed, right now the motor will start by the key switch and the tilt & trim operates by the switch on the throttle handle.

The next step and this is where I need help is how to hook up the five unconnected wires: Red, Yellow, Black, Pink,& Double Yellow w/ one connector which hang from the side-mount throttle control to make the voltage guage, horn, am-fm radio, live-well, bige pump & navigation lights work plus the dash board mounted ignition & lanyard kill switch have to be disconnected as the side mount throttle already have a key ignition & kill switch. Anyone know about the Yam wire colors and what they indicate and, oh yes, the boat is a '95 Starcraft Mariner 18 1/2' center console, an aluminum boat. Hopefully, I can get this Winnipesaukee boat on the water this season with some help from this Whaler Board, thanks.

jimh posted 10-06-2002 08:52 AM ET (US)     Profile for jimh  Send Email to jimh     
The owner's manual for the Yamaha 90 outboard shows all the wiring interconnections. The complete schematic is small and hard to read, but the information is in there.
waltuh posted 10-06-2002 04:50 PM ET (US)     Profile for waltuh  Send Email to waltuh     
Well, I ordered up the Seloc manual which should take about two weeks, via the book mail rate to get from California to NH so tomorrow: To my Yammi dealer I shall go, trolling for a wiring schematic.

Walked past an old 13' Whaler w/ the wood seats, mini side console & 30 hp Rude on a trailer in a public parking lot here in central New Hampshire this morning and it was totally full of water w/ a skim of ice on top. Being the nice guy that I am I opened both drain plugs and raised up the trailer with a rock a few inches so it will drain. No way to treat a nice boat...

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