Plug Schematic for Narco Mk 12a

[Jungle Jim]

I have a friend that recently purchased an older C-150 with a Narco Mk 12a radio. He would like to put in a head phone jack and eliminate the speaker, but he can't find a schematic that outlines which would be the proper pin to tap into. Any help would be appreciated.( i know the radio is outdated but it's fine for the type of flying he does.)

[Horseman]

Narco Avionics should be able to help they have a pin out page attached to their main web page,

http://www.narco-avionics.com/

They seem to have every MK12 listed but "A", you might try contacting them direct, as they probably have it on file.


Horseman

[Jungle Jim]

Thanks for the info. The Mark 12b is the same plug layout. it's great when these forums work.