Can't find a good grounding location

[Major Rhino]

I can't seem to find a good place to ground my amp. It has to be somewhere under the rear seat or near that. Any help is greatly appreciated!

 

[snoranger]

How about one of the seat bolts?

 

[Major Rhino]

How about one of the seat bolts?

I tried but they are pretty much impossible to remove. Maybe I didn't try hard enough lol

 

[chad551]

The entire is cab is metal, drill a hole and put a bolt through it. And yes you did not try hard enough on the seat bolts