help no tach in 1987 325e with 2.7 stroker

[mzollo]

i have a 1987 325e with a built 2.7 stroker and an I cluster was installed in my car.i have no working tach or econometer i have put in a know working cluster so i know its not that. so im trying to figure out this tach situation and ive found that i need to run a wire from pin #9 tach/signal to the black wire on my c104 connector in the glovebox.. BUT on my c101 pin#9 is empty. no wires are in the connector for pin 9. now on the 88 pinout there is the black tach wire that i need to splice my c104 into. http://ebookbrowse.com/early-late-e3...xls-d135243946 note here that 87 #9 is empy and 88 has the black tach wire, but no where in the 87 connector does it state tach signal at all, so what am i supposed to use to give that pulse signal? ive done my research and drawn a blank, so now i need your help.. please R3v help me out

[mr.vang]

i heard if you use a 87 I harness you don't need any modification, just plug and play

[mzollo]

well this is obviously not the case in my circumstances, i am running a 325i ecu aswell

[jlevie]

You will need to modify the engine harness by splicing into the tach & econometer wires and running them to C104. See http://wedophones.com/BMWManualsLead.htm for identification of the wires in the DME connector.