I just bought a towbar with an plug in wiring kit from towtronic. All the rear wiring was pretty straight forward but how to run the wire forward to the battery is completely cryptic. The installation instructions just show a dotted line to the front of the car in the passengers foot-well and some cryptic explosion of the foot-well with 3 bolts to attach the wire to. I've read some instructions that mention there is a grommet in the for LH side of the luggage compartment that leads to the front but I've opened it up and it doesn't seem to lead any further than the back seats. Also I have no idea where these three bolts in the passenger foot-well are I assume under some panel.

Any help would be great.