tach stopped working after 173 ecm swap

[325est13psi]

started up the m20 turbo for the first time this weekend, tach worked before i swapped from a 413 ecm

swapped to a 173 with a TCD chip, taco meter didnt work, does the pin change
at the ecm connector, i cant find the pinnout anywhere at the moment

any help would be greatly appreciated

thanks r3v

[325est13psi]

just realized i put taco meter

i must be hungry

[red325ix]

Bridge the pin 6 wire on the wiring harness near the dme to the black wire of the three pin plug that goes from the cluster to your glove box.

[red325ix]

both wires should be black i think