I made the mount out of 2x2x1/8" aluminum angle. I put a couple nutserts next to the dimples in the firewall to attach it. Of course my excitement to get it installed got the better of me and I didn't get any pics of the mount
The red arrows are approximately where it's bolted to the firewall. The green arrow is the inline fuse, mounted under one side of the angle. I have 4ga running from the battery to the fuse then to the positive buss of the relay block.
I used the same method with separate ground busses for the load returns as described in the link above. One is mounted under the leg of the angle behind the relay block, the other is under the piece of aluminum on the front.
The red arrows are approximately where it's bolted to the firewall. The green arrow is the inline fuse, mounted under one side of the angle. I have 4ga running from the battery to the fuse then to the positive buss of the relay block.
I used the same method with separate ground busses for the load returns as described in the link above. One is mounted under the leg of the angle behind the relay block, the other is under the piece of aluminum on the front.