Yamaha Marine LCD Display (wiring)

[Mycophiles]

First time post. Glad you guys are here.

I've just bought my first boat with an 0x66 2000 Yammi. The boat came with both the RPM and SPEED marine meters but I have no idea how to wire them in. Right now the tachometer and fuel gauge work but nothing else.

I need to re-wire everything under the center console but I can't find the wiring diagram for these two devices. There are many posts on here from years ago but all of the pictures have been removed.

Does anyone have the wiring diagram for these devices? I believe I have the older model with the round connectors on them.

Any help is much appreciated.

[boscoe99]

Instruments with round connectors date back to 1993. They were changed in 1994 to square connectors.

If you really have round connectors on your instruments then you more than likely have some adapter harnesses in use.

Here is what 1993 and earlier instruments used on a 1994 and later motor would look like. Or should look like. Or did look like at one time.

[Mycophiles]

Much appreciated. Thanks you! My next goal is to find the best shop manual for the 2000 ox66.