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Yamaha 75C - LCD Multi-Function Tachograph - No Trim / Oil / Temp

alt123

New member
Hi all,
Friend just bought a Zodiac with 2 x Yamaha 75c with the multi-function LCD tachograph.

On both Multi-function LCD tachographs....
RPM Works

Trim / Oil / Temp NOT working. Trim on fully down, no oil indicating, Temp is flashing.

We have checked connections, all seem fine. Checked 20A fuse on the engine - OK.

I disconnected one of the wiring connectors (There's 2 connectors and approx 4 bullet connectors going to teach Display) and the Trim showed full up, just as an aside while wiggling around with bits.

As this is on both engines, I can't help but feel that something was disconnected by the previous owner.

The only other thing I can think of, may not be related, is that the RIB has aftermarket controls, there is no 704 control box.

Any thoughts on where to start?
 
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