2005 dodge ram tach wire?

Audiovox lists a wire and they give the location as On the ignition coil.  That's no help for you.

Note on the 06 model reads as follows.

ON DIESEL MODELS THE TACH WIRE IS AT THE ECM ON THE LOWER DRIVER SIDE OF THE ENGINE, FRONT 60 PIN PLUG, PIN 24 OR AT THE CAMSHAFT POSITION SENSOR, LEFT OF THE ECM AT THE 3 PIN PLUG. ON SRT-10 MODELS THE TACH WIRE IS ON THE BLACK PLUG - PIN 18.

Note on the 04 model reads

ON DIESEL MODELS THE TACH WIRE IS A DARK BLUE/GRAY AT THE ECM ON THE LOWER DRIVER SIDE OF THE ENGINE, 60 PIN PLUG, PIN 24. FRONT PLUG 4 ROWS UP FROM THE BOTTOM, 4TH ROW FROM THE FRONT.

2002 dodge ram truck with a hornet alarm on it. i used the keyless start up and instead of starting up like always it just ckicked