MerCruiser MCM 165 Trim Sender Wire

[brianadmans]

Hi Folks. I am hoping there are still some expert OLD MerCruiser experts out there with good memories!. I have a very old (79-81) MerCruiser MCM 165 - serial number 5653967 with what I believe is an MC-1 outdrive. I cannot seem to figure out which wire is the trim gauge sender wire (did this era even have a trim gauge?). Can one you please help. Thank you

 

[alldodge]

Welcome
When the trim sender first started it uses a Brown/White wire, and still does today