Quote:
Originally Posted by mr220v
The actual signal sent to the cluster is generated at the ecu on the beams, and other direct fire toyotas. On older toyotas, the tach signal was created by the igniter.
I used the msd 8920 once before. It was on my first 20v when I was using an msd blaster. The signal would not work with my toyota tach.
It seems that the beams tach signal is the more standardized type.
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yeah i know....which is why its so wierd that the tacho signal still works even with the tach adapter to the BEAMS gauges cluster that im using now....i spent 2 weeks figuring out where and how all the wires go from the original ST184 cluster to where their equivalent locations are on the ST202/BEAMS cluster that i got with my clip (i asked for it specifically bc of the correct milage & just bc i wanted to be different by having the BEAMS cluster in my rig...)
The thing that i dont get is that if i run the TACH signal from the ECU to the cluster then it doesnt work, but if its thru the tach adapter then it does work...which is why i got to thinking that there is some sort of OEM tach adapter thing somewhere...
any idea?