07 ram won't crank pkucg2x

I installed a remote starter into a 2007 Dodge Ram 1500 pick-up, but it won't crank, I programmed the transponder part right because after I was done, I took the transponder chip out of the key, put a ground on the xpressit unit and started the truck with the key no problem.  Then I double checked my wiring to the bypass unit it has a constant 12v on the red wire, the green wire gets 12v from the starter unit during crank, pink wire gets 12v from ign, and the purple wire is hooked upto one side of cut purple with brown mux wire right behind switch and the purple with white wire hooks up to the other cut purple with brown mux wire, I even tried reversing the purple wires still nothing.  The way I programmed the mux part is it says to put 1 key in ign the turn on then off then remote start truck, still no crank  

sorry there is also a ground on the bypass and the ground out when running gets a ground out from the starter unit as soon as I press start

might sound dumb, but did you use solder on the mux wires?  the bcm has to see the proper voltage so a good connection is important.  unless your bypass module is a dud but thats not too likely

How many keys did you use to program?  The only reason Im asking is the last sentence you wrote "The way I programmed the mux part is it says to put 1 key in ign the turn on then off then remote start truck, still no crank  ".  You need 2 valid keys to program the module?  What happens when you try to R/S the truck in current set-up?  Does the  security light  in the dash flash, stay on,  come on go out?  Did you try putting a key in the switch(dont turn just set it in) to see if would start?  This would tell you if you have a Sentry  immobilzer problem or a bypass module problem.

Yes the truck will start with the key, but won' t with the transmitter from the remote starter, the unit is a prostart CT-3471 2 way this unit is made by autostart which is owned by directed electronics.  I have installed dozens of these units and never had any problems, all the outputs from the starter unit are good.  the gwr wire sees a ground when the transmitter is pressed

Did you the connect the disarm wire from the rs to the bypass module ?

I received the bypass unit back today, I opened it up and it looks like all they did was solder a resistor between 2 of the output wires, it works, I will have to remember that for next time, thanks to everyone who replied