But I used the writeup from zboost here: La-Z-Link Except I only ran the 4gauge positive wire down the side of the car. The stock negative wire was grounded to the stock firewall position. In the rear for the negative terminal on the battery, I used 1ft of 4gauge wire and grounded it on the center thread used to hold down the spare tire. No other grounding points aside from those.
I've had my car this way for about 4-5 months and there's no change in voltage compared to the stock setup.
