im adding some Hella lights up front. I am somewhat new to mods and general electrical work on vehicles. When utilizing the factory grommit on the driver side firewall is it easier to undo the tape and try and slide a wire through with the factory wires? Should I drill a hole and add my own grommit? Or can i poke a hole in the factory grommit and just silicone the hole afterwards? Will any of this void my warranty?