I am having trouble with the installation of an evo-chrt6 standalone t-harness on a 2015 Jeep Cherokee standard key (no push to start) All wiring is hooked up and confirmed correct. The unit is flashed for a standalone install with no alarm. I have used the recommended settings. I am getting a 3 flash code on the red light on the evo (parking lights flash accordingly with this code after the lock button is pressed three times but it is not cranking or starting. Looking at the instructions, 3 flashes indicates something to do with a tach although I do not believe this model vehicle has a tach wire to be hooked up. What should I try to get this working?