tbi tach output?

[ryan22re]

installing a cheapo tachometer today, and am wondering where would be the best place to pick up the rpm signal.

i was thinking the white wire coming from the coil, but i seem to remember the esc module having a tach output.

id really like to pick up the signal at the ecm, so i can avoid wiring under the hood. im thinking it should be the same white wire from the coil, just under the dash. oh yeah, its an 87.

ryan

 

[opfor2]

installing a cheapo tachometer today, and am wondering where would be the best place to pick up the rpm signal.

i was thinking the white wire coming from the coil, but i seem to remember the esc module having a tach output.

id really like to pick up the signal at the ecm, so i can avoid wiring under the hood. im thinking it should be the same white wire from the coil, just under the dash. oh yeah, its an 87.

ryan

There should be a tack output wire on the HEI distributor

 

[sweetk30]

the coil wires have a extra plug not used and this is the wire to hook it upo to. the tbi dist dont hook up like the old hei ones do.

 

[redneckdude]

I asked about this a while back...there is an extra terminal on the coil for tach signal. Find a thread abotu this started by me and theres a pic in it from another member that shows right where it is.

 

[ryan22re]

yeah i found it.

thanks for the help.

it's working good.


ryan