🤦🏾 my head hurts trying to figure out this problem

[Terry Lindsey]

2009 Cadillac CTX-4 with a 3.6
The rear battery in the trunk died I put another battery in it tried to start it all interior lights brake lights turn signals the radio the AC the moon roof the power windows the door locks power seats etc it all works when you try to put it in the start position it's quiet you don't hear no clicks no nothing I tried to put it in neutral same thing quiet no clicks no nothing I bypassed the starter relay using a jumper wire from pin 30 to pin 87 and nothing starter did not engage I put the key fob in the pocket under the arm rest and still nothing the key fob doesn't lock or unlocks doors or open trunk I'm trying to avoid the shop to get raped ... Has this happened to anybody if so can yuu a point me in the direction to fix the problem id appreciate it

[Stealthee]

Double check your connections at the terminals. A loose connection could allow things to light up, but cause the issues you are experiencing.