I just finished hardwiring my V1 and I'm pretty happy with the arrangement. My car has a light gray interior with matching color RVM. Should I change the color of the power cord from the original black to light gray to blend in more with the interior so the car thief will have to look harder to find the dangling pig tail from the roofliner? If so, will a regular phone cord work as long as it has 4 wires? Thanks!