ARSkemp 10+ year member
FI-AQ-PA-AB-Profile-MB-RD
I would argue that regardless whether their was a battery in the back or not, i would still rather display the voltage the amp is receiving then the voltage @ the front battery.If he has a battery in the back. If the only location for a battery is up front then it might be wise to find a location suitable for reading amperage/ voltage closest to the battery up front.