should i run the positive amp wire and rca and remote wire next to each other or the positive wire and rca on oppisite sides

 

ideally on opposite sides... but its unlikely you could tell the difference either way

 

k
where should i ground it to

 

usually u should separate the positive and the rca, b/c u can pick up interference or a whinning sound sometimes if they're together. Just try and ground it to a good metal surface in the trunk or i've even seen people ground it under the back seat where the seat belts bolt into the metal body of the car. If the surface where u want to ground it at is painted, u might wanna sand/file the paint away so u get a good connection.