Cht probe question

[Endreholen]

I am installing a JPI engine monitor. So I replaced the factory single CHT bayonet probe with the one going to the engine monitor

However to be legal i need to get a spark plug gasket CHT probe for my factory CHT gauge.

The old probe was a single wire grounded to the case. However most of the probes I see at aircraft spruce are two leads..

Need some help identifying right prove

 

[Reece]

 

[Endreholen]