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Teds89IROC · 09-26-2009, 05:29 PM

How do the 4th gens accept the VSS signal off the trans to operate both the speedometer and ECM??

My stock 89 speedometer receives the cable from the 700R4 trans and also has a buffer that converts the spinning cable to an electric signal for the ECM.

My thought is to pick up a 93+ speedometer and run my VSS wires to that/to the ECM... however it works on the 4th gen cars. That way I can see what speed the output signal is sending and adjust my Dakota Box accordingly.

09-26-2009, 05:29 PM	#1
Teds89IROC Join Date: Sep 2004 Location: Haledon, NJ Posts: 5,162 iTrader: (0)	4th gen electric speedometer/VSS/ECM How do the 4th gens accept the VSS signal off the trans to operate both the speedometer and ECM?? My stock 89 speedometer receives the cable from the 700R4 trans and also has a buffer that converts the spinning cable to an electric signal for the ECM. My thought is to pick up a 93+ speedometer and run my VSS wires to that/to the ECM... however it works on the 4th gen cars. That way I can see what speed the output signal is sending and adjust my Dakota Box accordingly. __________________ 1989 IROC-Z 355 LT1 T56 Swapped 2016 Chevy Colorado LT 3.6 v6 2008 Jeep Grand Cherokee Laredo 4.7L RIP 12/29/2016 1998 Honda CBR 600F3 2003 Yamaha FX140