AJ85WA
Well Known Member
Hi Guy
I need some advise with grounding my mgl efis backup battery.
From the install manual it states that during normal operation the EFIS will charge the backup battery.
I want to use the backup battery to run a backup bus for the boost pump and efis ect.
My question is can I just ground this battery against the common ground on the firewall where the main battery is grounded? Will it still charge the backup battery this way?
I need some advise with grounding my mgl efis backup battery.
![dc392b6c980740875474bab1466beab1.jpg](/community/proxy.php?image=http%3A%2F%2Fi1106.photobucket.com%2Falbums%2Fh379%2FAj85wa%2Fdc392b6c980740875474bab1466beab1.jpg&hash=077768a52a7065ad6b913a78898323dd)
From the install manual it states that during normal operation the EFIS will charge the backup battery.
I want to use the backup battery to run a backup bus for the boost pump and efis ect.
My question is can I just ground this battery against the common ground on the firewall where the main battery is grounded? Will it still charge the backup battery this way?