tach wire on 03 wrangler

I have installed a remote starter on my 03 jeep wrangler.  I had it programmed for the tachless option, it starts fine but shuts off after 4-5 miniutes of running, even after programming for 15 minute run time.  I talked to the manufacturer (Code Alarm) and they said on my model vehicle I have to connect the tach wire because of a voltage drop after running.  After that has happened the system errors out (three flashs) and has to be reset to start again.  I had no luck finding the elusive, grey/white wire (as listed on this and other forums as the correct wire) at the coil and the injector wires did not show the tach indications with a DVM.  I talked to a jeep dealership and they said there is no tach wire, it is all included in the control modul wiring, and this is why Chysler doesn't make a remote start for this vehicle.  That sounds strange to me, but they know best :)

Can anyone give me a physical location where I might find a tach wire?  I'm tired of jabbing wires looking for the correct indicators.

If your RS shuts off before timing out, you may have another issue other than Voltage Sensing.

My key is black.

I'll check out that blue/tan today,  Thanks.