outboard motor tachometer not working sorted by

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Is this your boat or are you working on it for someone? Should I connect gray wire with the same wire like oil? I can't find an adapter cable.

Thanks, Electric start or manual start? Does the light come on? It's hard to see but I'm holding the connector in pictures 1 and 4 below.

Might as well suspect that it is the lower unit.

The tach lights up but that's about it.

There is no four wire plug in on my wiring harness, the yellow block is two 10 amp mini fuses.

It is a small square component with 2 yellow wires a grey wire and a red wire connected.

When we bought our boat, the original tachometer was working, but cracked on the LCD display, making it very hard to read the gauge.

Re: Yamaha Tachometer Problem Assuming that you have the correct pole setting, the tach rpm readings should work regardless since that tach signal is inputed via the green wire that is not part of those white plastic harness's.

I honestly searched the entire forum for this problem, way before posting.

My tach has a single wire bundle exiting the back and the number 534 on it.