I've been running a similar setup on my Frontier. I've had the Optima installed for about 8 Months with no problems. When the Service Manager at my dealership saw it, he about shat himself. He thinks that cluster of Fuses needs to be RIGHT ON the Battery Terminal. I pointed out there was a 2/0 Gauge Wire connecting it..... He shook his head and told me if I have Electrical issues, don't come crying to him. ....Prick