I need help installing a Yamaha Multifunction Tach. I have an '03 Yamaha 115 hp 4 stroke. The gauge came with a harness with two plugs that run back to the motor, and I believe 4 or 5 wires that run to the inition switch. So far I have only been able to locate one plug coming off the motor, and I believe it only has two wires going into it from the motor - the wiring harness has 4 wires in each plug. Couple of folks I talked to at Yamaha said that my motor should have both plugs, but I can only find one, I even pulled the boat over to the nearest Yamaha dealer and they were also unable to locate the other plug. I checked a newer motor, 07 I believe, and it had two plugs coming off the motor. Some people have told me that newer motors only have 1 plug, but that clearly is not the case. My plan now is to hook up what wires I can without pulling the harness through the hull, and see what functions I get on the tach. Several people said I should get RPM from the ignition connection, is that true? I was really hoping to get the trim function to work. Unfortunately I don't have all the part numbers from the motor and the gauge in front of me, but I'll be happy to supply if someone needs them to answer my questions.
Thanks for any assistance.
the engine should have 2, one is alarm the other trim, in 05 they went to one.
but without looking I cant tell. on the engine 4 plug, what are the wire colors?
on your tach the yellow is 12v +, black is ground,blue is lights green is tach send. the pigtals are one the ign switch assy for 704 and flush mount controls and hanging from the box on 703 side mount.
Thanks for the response. On the only square 4 way plug I can find coming off the motor, there are only two wires going into it from the motor. One is Pink/white and the other is pink/black. It is a female plug. On the male side running to the console is a black wire, a pink wire, and a brown wire that is capped off before it goes anywhere.
There is another plug right next to this four way which is round and has eight wires coming out of it.
I took a picture of it which I could send but I don't know how to attach.
The kit I ordered was 6YRWOO35E000
The tachometer was 6Y58350T8200
The trim/oil harness was 68F82553700
The gauge harness was 6Y5835532000
As I am looking through the paperwork that came with the kit I notice that what they sent me was:
Kit 6YRW0035E100 (which says for 2005+) mine is an 03
Tach 6Y58350T82BK
Extention wire lead (8M) 68F825539000
Wire harness 6R8825820000
Gauge harness 6Y583553N000
Maybe I just need a different harness? Any thoughts?
Well it appears we have similar problems. The unit I received seems to be for pre 2005. The harness has two plugins and 4 wires. My Yamaha 40 is 2008 and it has only one plugin and two wires.
in 05 yamaha changed from two plugs on the engine to one, however the harness between the engine and console remains unchanged. so one gets capped.
we really really need a picture , occasionally when dealing with late style guages and pre 05 motors it requires an adapter at the engine side of the harness.
One has four wires, pink,, black, grey orange and it matches a plugin on harenss exactly.
One has two wires green and green with red stripe
Harness has two connectors on both ends with four wires in each. Pictures show it well.
I tried the connections putting them where they matched wire color and / or plugins fit. The gauge seems to do its prestart test fine and if I start engine tach works fine. Only thing acting funny is trim it, pegs out at five and flashes but never changes no matter where I put it.
r1cook
double check your dip switch settings on the tach as per thefins thumbnail.
the other issue in this hijacked thread I still need pics of but its my bet he will need the engine adapter for the pre 05 to post 05 engines, its in both the 05 tech guide and the rigging guide.
One has four wires, pink,, black, grey orange and it matches a plugin on harenss exactly.
One has two wires green and green with red stripe
Harness has two connectors on both ends with four wires in each. Pictures show it well.
I tried the connections putting them where they matched wire color and / or plugins fit. The gauge seems to do its prestart test fine and if I start engine tach works fine. Only thing acting funny is trim it, pegs out at five and flashes but never changes no matter where I put it.
Thanks --and sorry for high jacking!! Three hours standing on my head wiring in this baby made me light headed and desparate!! Actually thought blending them together would bring in more info to help both the originator and myself.
Dips are fine but the adapter thing is interesting--off to the dealer!!
I'm sorry I gave you the wrong information. After reading post again I realized we were talking about 2 different part numbers and I called Yamaha to confirm.
6Y5-85335-00-00 is to make older gauges(1994-2004) work on 2005 and newer motors.
6Y5-85335-10-00 is to make newer gauges(6YR-W0035-E2-00 and 6YR-W0035-F2-00 kits) work on older 1994-2004 motors. It connectes between Trim/Oil harness and gauges at console.
Yamaha Multifunction Gauge installation
, occasionally when dealing with late style guages and pre 05 motors it requires an adapter at the engine side of the harness.
Re: Yamaha Multifunction Gauge installation
Linear Mode
