Tacho won't work in 1990 SW turbo on Haltech ecu

Just put in a Haltech ecu and tacho won't work. Was told but tuner runs off std ecu which is now gone. Also boost gauge not working. Any one know how to fix? Cheers.

running duel channel ignitors 

ill go grab my spare tacho...
 
 
Which haltech are u running? just want to compare settings to make sure my base settings are correct compared to other 3S's
 
BAH! ill PM u my number. shoot me a msg ill go over what u need to do

So your not running the standard coil/ignitor?

Toyota tachos in older cars are a negative driven tacho, not positive like a lot of other cars.

Two different methods are possible, depending on the car. Sometime you can tee in 12v to the tacho output wire with a 1k resistor to properly pull it up. This is probably not going to work in you case.

The other way is to use a relay. You need a relay that does not have a diode or a resistor. You feed 12v ignition to pin 86, and pin 85 goes to the output on your haltech that drives the tacho. The wire that goes to your tacho is tee'd in between the ecu and pin 85 of the relay. Pm robk and he should be able to send you a diagram.

Hope this helps