I was trying to install the hotlicks flame kit and I was trying to know if there is a certain place to put the ground wire in the trunk because I put it on one of the screws where there are ground cables and when I use the flames the car shows at check and the shifting lights disappear from the dash and also shows the amber key sign

 

I would check your grounds for corrosion, sounds like you have a grounding problem. Usually when the key sign shows, you have a key fob battery on its last legs (close to being dead).

 

How about for the transmission sign showing up would it also be a grounding issue