Yesterday my friend wired up my sub for me, ran all the wires from the back to the front but had to drill through the box of wires at the front of the car to run the cable through to the battery. I dont think the problem was before this as I only noticed today, but inside the green signal indicator flashes really fast as does the back indicator, and the front and side repeater dont work at all.
Is it likely that hes hit a wire within that box?
If so how does the box come off, as it looks like a 10mm socket but its such a small gap one doesnt fit..
Any ideas and suggestions please?