Apexi REV/Speed Meter - Install Help??

[coolZero]

I got a Apexi REV/SPEED meter and I need to find.

IG Power
RPM
Ground (no problem)
Speed

I'm having trouble finding the RPM and from what I'm told the PT doesn't have a spot to tap. So I believe I can use the camshaft position sensor and tell the meter we're on a 2 cyl engine and the rpm should match up then. I got a copy of the PCM C1 and C2 connector showing the pin outs. So it seems I can do this faily easy. Does this sound right and is ther anything I need to know before I go to splicing into the wiring. As always thanks in advance.

Eddie

[coolZero]

I did find a reference to the RPM all motor mike did it so that answers the RPM issue. Any additional input is always welcome.

Eddie

[Powertrip]

Did you manage to get things up and running okay? In my case, my Hi6-di2 has a tach output, which is very handy, but the cam pos sensor should work fine.

Brad

[coolZero]

Originally posted by Powertrip
Did you manage to get things up and running okay? In my case, my Hi6-di2 has a tach output, which is very handy, but the cam pos sensor should work fine.

Brad

I got the meter working but when its attached I get a ruff idle almost like the timming has been retarded. Don't understand. Maybe the meter is putting extra resistance on something. Well I'm disconnecting it for now but it does look cool. Things that make you go hmmmm?

[coolZero]

Originally posted by Powertrip
Did you manage to get things up and running okay? In my case, my Hi6-di2 has a tach output, which is very handy, but the cam pos sensor should work fine.

Brad

Well I re-checked all the connections all is connected according to plan but as soon as I connect ground I get a ruff idle. But I've seen a PT with one runnig so what gives????

[coolZero]

Talked to Apexi tech he says by trying to tap the camshaft position sensor I may be sending exta voltage and that might cause the ruff idle. He says to tap right off the tach. Anyone ever done this know what wire I need to tap?

[coolZero]

Ok! I figured it out! IT WORKS !!!! Ah ha ha ha ah buha ha haaaa!

[coolZero]

Just in case you're following this and for future reference here's the connection taps I did. Errors I made and corrections to make the RSM function right

IG- I did NOT tap of the IG Coil driver on pin 3 of the PCM C1 conector. Rather I when back to tap I had of the fuse panel this way I can bring in a swith for off on. Right now it starts when the car starts.

RPM - pin 33 Camshaft Position Sensor Signal. the meter is set to a 2 cyl and it matches up fine, except when it drops below 912 rpm it acts like it going back to 9000 and working its way down from there. I'll figure that out too later and post it back here.

Ground - pin 10 is a ground or you can use what ever you may have it just convient becasue you are right there.

Speed - this is where I messed up I used pin 5 this is the speed control supply I needed to be on pin 66 of the C2 connector that one is the vehicle speed sensor signal. Between using pin 5 (speed control supply) and IG coil driver on pin 3 this combo produced the ruff idle. No wonder it was all screwed up.

Now once I get it all tweaked out it will do:
100,200, 400 meter acceleration times
100,200,300 km/h acceleration Overview
It has a stop watch with split times
loss power measurement
trip
Batt voltage
speed
tach


PS thanks Brad

I was reading a fairly interesting book on Underderstanding Automotive Electronics (can't tell I'm a Noob) and the book stated that the crank sensor sends an output every two rpm (4 stroke) and that the camshaft sensor sends an output (voltage) every rpm (2 to 1 reduction). Question is, this being an old book (1998), is this correct for 16 valve engines such as the PT? Does anyone have a manual that has any info? Why set the meter to 2 cycle?

Thanks,
Kidgt