I can do everything else and I feel like an idiot for asking this but where did all of you run your battery+ cable through the firewall Ive taken out the cruise control device no grommets there, Ive tried to look for a place to drill but there is always A/C tubing in the way, please help me if you can I've spent 3 hours now trying to find this spot! lol...If I dont have to I would like to avoid drilling a hole. The blazer is a 1998

 

on the passenger side you pull the carpet up and there should be a gromet with nothing threw it.