theoz 10 Posted December 26, 2017 Hi Everyone, I am currently building my 1.8t corrado. I have come across a problem with getting my RPM gauge to work. The corrado is a 1994 (ex 2.0L 16v 9a) now with a 1.8t ARZ. I have a wire connected in the ECU T121/53 blue white wire going to G1/12 on the fuse box. I was wondering do I need tach converter or will the later corrado clocks do the job? Any help would be much appreciated. Quote Share this post Link to post Share on other sites
GrahamU 5 Posted December 26, 2017 (edited) looking at the diagram for the arz, pin 53 is for the Air mass meter, with a quick look I'd say you need to connect the tacho to pin 37. The cluster from a 2.0 9A (assumably with electric speedo) will be fine taking the tacho straight of the ECU without the convertor, mine works fine with an AGU ECU Have a look here for the drawings https://drive.google.com/drive/folders/0B_V9-6xfgGlINzhhM2IyNmItOWRhZS00MzBkLTk2MTEtNGIyZDFmMDg0NWM2 Edited December 26, 2017 by rado20vT Quote Share this post Link to post Share on other sites
theoz 10 Posted December 26, 2017 Cheers for your help. I will take a look at the link. Will keep you posted on here to see if I can get it to work. Cheers Quote Share this post Link to post Share on other sites
theoz 10 Posted December 30, 2017 I got the RPM signal sorted today. I was connected to the wrong pin. Thanks to rado20vT. It is pin T121/37 to G1/12. It works very well with the late corrado clocks. One step closer to finishing :D Quote Share this post Link to post Share on other sites
