FracKen

I am in the process of trying to replace my entire cluster with a digital and select analog viewing in a dash/hud combo solution while also feeding the data into my SCADA system I am going to use. To accomplish this, I have to remove my cluster completely, run the wires into my PLC and then bring them out in my desired format. Eventually, I plan to completely replace all buttons and ***** with the touch interface I am going to add. The issue I am running into is from the below pinout PDF; it doesn't explain the numbered circuits. I am sure tac, speed, fuel and temp fall into there somewhere. I could use a scope to sort it out; I just wanted to see if anyone knew already and could just tell me to save me a bit of time.

http://ww2.justanswer.com/uploads/jo...6_cluster6.pdf

Thanks in advance.

-Ken

ezone

Here's an issue: The tach, speedo, coolant temp, and some of the lights are controlled by the PCM and/or MICU through a data bus, instead of individual dedicated analog circuits to the cluster.

The cluster has its own microprocessor to convert the data to run the gauge needles.

FracKen

hrm. OK, so that means I am going to have to go to the pick a part, grab a cluster and reverse engineer the PWM output. I love integrated solutions...


THIS IS GOING TO BE FUN. *sarcasm implied, however, my resolve is now stonger*

thanks ezone.

ezone

Could use an OBD2 scanner interface for data?

FracKen

I could, however, I don't want the slow data speed and also to just rely on the OBD2. I did this in another car I built once and loved it. My background is in SCADA platform development and advanced industrial automation, I plan on literally using SCADA for all of my sensor to collect the data on a 10ms input rate and then outputting that data to an integrated HMI I build for viewing and interpreting. Basically, I am going to take the OBD2 interface and put it on steroids.

After my last post sitting there it dawned on my that if I can't use the existing wireing, it would probably be easier to do a tap onto the PWM and 12v interfaces on the existing sensors and directly bypass the ECU for the data.

ezone

This should be interesting.....

FracKen

lmao absolutely. especially considering that I have to ensure I don't fry the ECU

I have been down that road before.