Tach input to dash combo

[frankc5r]

Does anyone who is not using the stock ecm
confirm which of the dash input connectors,
a110, b111, or c112 is the tach input. It
appears to be A5, labeled as ecm in the
diagrams. Thanks.

[Bob_n_Cincy]

Does anyone who is not using the stock ecm
confirm which of the dash input connectors,
a110, b111, or c112 is the tach input. It
appears to be A5, labeled as ecm in the
diagrams. Thanks.

Maybe this will help you out. from 2002 service manual. other years are different.

[frankc5r]

Thanks Bob. Those are the diag I was referring to
in which i110-pin A5 is labeled as ecm right below
the drawing of tach. VSS is labeled right below
the speedo and thus possibly infers A5 as tach
pin, I hope.