i am hooking up aftermarket techs and some neons and i want to know were i should mount the ground wires? were is a good spot inside not in engine bay thats hiddin with a screw to make my life more simple?

can i use a screw with a washer (ground wires in between metals,but screw mounted to plastic) like a screw holding plastic under dash or something?? i dont no if u get me there if not let me no i will make a pic. anyway would doing that be fine/safe/?

oh and can u use the same spot to ground all wires??

 

You need to use a spot that attaches with metal to the main chassis. Behind the kick panel area has a few spots you can use.