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I have a 1985 OMC control box on my Evinrude 50, and I was thinking of adding a tach. Rather than spending $40 on a factory harness, I figured I could easily assemble one. I have 3-wire boat cable and terminals. Does anyone have the specs (size/make/etc) for an appropriate plug that fits into the slot on the control? Or at least a close up picture of one? Thanks!
However, it depends on the tach you purchase.
Some tachs are called plug in tachs and have the pigtail already to plug-in.
Others do not have the plug-in and are wired directly to the terminals on the tach.
If I remember correctly, there are 3 wires to the tach not including the blue for the light.
1. Purple (key on power)
2. Gray (pulse for tach)
3. Black (ground)
Thanks Joe - I did review your project writeup, which is great! I was going to keep it simple, so I guess I'm just looking for that black 3-wire plug in the middle left of your picture. Is that a part that can be sourced individually?
You would have to take a look on the BRP Online Parts Catalog to see if those plugs are available.
I know I have purchased plugs in the past for many things like trim & tilt, and of course, all the individual pins, plugs, etc. on the System Check I just did.
