Technical ecu IAW 4AF . tachometer(rpm) instaling

[speedfighter1987]

hello everyone hope youre al ok.

i have a fiat seicento 1.1 sx mpi.

now i want to instal a tachometer(rpm)

because the are no cabels yet i have to do it myself.

ive already got the light the 12v and the earth cable.

but now im stuck,

i need the signal for the rpm's .
i know that with the spi version you take pin 23 from the ecu but this is a other ecu



the ecu ive got is IAW 4AF.M7 /HW204/1808 - o7B

do anyone have a wire diagram. or did anybody had this problem too ?

please help me

wirh kind regards benny