2016 Mustang MT No Crank No Start

Question

Good afternoon,

I am having an issue with my 2016 Mustang MT not cranking or starting with the remote start feature. Vehicle goes into ready mode after the correct sequence, the module clicks and a solid red LED appears on the back of the module itself. After setting ready mode, I hop out and press lock twice to kill the vehicle. Lastly, I use the 3x lock sequence to remote start the vehicle, it primes, and I just hear the relay that I installed clicking over and over and the accessory mode turning on and off repeatedly until I manually start the vehicle to break the sequence. I thought it was an issue with the sacrificed key, but I held my regular-use key fob in the vehicle to confirm that it wasn't the issue, still the same condition as before. All connections look to be good, only soldered connections were used.

SN: 002B04 710520

Thank you for your help.