I do have an OEM service manual for my 2011 E-Tec Evinrude 15hp. The wiring diagrams at first weren’t being that helpful to me. The one I've be paying particular attention to is titled MWS DASHBOARD. For some reason this wiring diagram wasn’t making sense. I may have been over thinking this. Looking at this wiring diagram again as I type this post, it shows the purple wire, 12v supply from the ignition switch, is attached to the “I” terminals on the trim meter and volt meter (all gauges with an “I” terminal). The attached wiring color code chart says the purple wire is the 12v positive wire from the ignition switch. Makes sense that you wouldn’t necessarily want gauges active with the key off. And the white/tan (white/gold as I saw it) wire connects to the “S” terminal on the trim gauge, just as you said jakedaawg. The gray wire would be the tachometer signal to terminal “PUL” on the tach. The black wire is attached the all “G” terminals (ground).
See new attached images. I've labeled each position and wire colors. Hope the print on the pictures isn't too small, but just in case they are as follows by the number on the connector: 1.) Purple, 2.) Black (I would expect to be ground), 3.) Gray, and 4.) White with gold or tan stripe. All the colors fit per the listings in the above.
Now on my shift/throttle lever there is a trim up/down rocker switch which plugs into the harness but if memory serves me correctly, it's a 3-prong triangular connection with green, blue and red wires circled in red. I'll have to go check those colors again, see picture numbered 4.
After seeing the wiring color code chart that I found online, it says “Trim Up Switch” wire is blue with a white stripe (possibly solid blue), and the “Trim Down Switch” is green with a white stripe (possibly solid green). In the picture I numbered “5A,” the blue/white wire and the black wire plug into a solid blue and a solid green wire. From what I see here, I’ve been working with the wrong wire colors. It should have been solid blue and solid green. Can you or anyone else tell me if the item in picture 5B is the tilt/trim relay? Do you need a better picture to tell? I have a rocker switch on the shift lever for tilt/trim which I think is active (don’t know yet since its not been powered up yet). Now in this connector circled in yellow, shows the blue/white wire paired up with the solid green wire, and the black wire paired up with the solid blue wire. My best guess is one is positive and the other is ground. Can anyone tell me if my line of thought is correct? Can anyone tell me which is positive and ground or doesn’t it matter because of what I think is a relay?
The primary reason I bought the motor was for the tilt/trim feature. I have a Crestliner 2360 Eagle SST with an extended transom. It’s a long reach to tilt the previous 1984 Johnson 9.9 back there. Anyway, thanks again for any input. Have a great day.
