[steamship]

Originally Posted by Mossyboy1978

Why would I need an extra length of wire for the green/yellow wire test? Sorry - I am an auto electrics noob....

Also - is there a way to check the connection at the pin? could it be that simple?

Originally Posted by Mossyboy1978

I'm assuming that connector is behind the instrument binnacle? Could be as simple as a wire come out I suppose?

For a continuity check of the wire, you need to have a probe at either end, as it's measuring the resistance between the probes. One end will be at the coolant tank where the connector is located (your photo posted earlier) and the other end will be at back of the instrument cluster (wires attached to grey block in following image).



In terms of a wire coming out, I would tend to think it wouldn't happen at the instrument cluster end, but there could be a possibility that the connector at the coolant tank end might be further back in the connector than it should be. i.e. whilst being connected, one of the pins was pushed further back, so not making a connection. However, having said that, it doesn't explain how it happened in the first place.