Re: Grounding wire for sub in Golf/Gti (Defton613)
I grounded mine at the lower rear seatbelt mounting point. Underneath the rear seat you will see the bolt that mounts the lower end of the seatbelt to the cars frame. This worked out to be a good grounding point for me. If you use this, be careful not to crossthread the bolt when you put it back in. Good luck.