i have an 03 Dodge Diesel, just installed a Viper 5701 remote start, this is a 5spd, so you know with the new vipers you NEED tach for the RS, i cannot find tach to save my life, i am an installer, so i know what i am doin, just looking for some more input from other installers. i dont have a PCM on the side of the firewall like the autos do, i know where the ECM is on the side of the block, its not a blue/gray like the 04 and up, i have tried multiple wire ( testing ) no dice. i have tryed the Cam postion senor, no dice. you cant use virtutach or voltage, these diesel wont pick it up, i cant use the 454T? the tach generator, it wont sense the signal in enough time, i have been seaching for this thing for hours and no luck, **** i have this remote start and cant use it. any help would be great thanks!