I pulled my steering column off, if you were sitting in the drivers seat, look to the left and you will see the back of the ignition barell, I got a multimeter, held it on each point (think there is 3) until when i turned the key on i got power from that point, then stripped the wire back and soldered my hardwire onto that. Then there is a little screw which holds the ignition barell in place, I undid that and screwed the negative earth into the screw. Bobs your uncle, got the radar one when the ignition is set to ON. Took me about 2 minutes plus time in routing the cable up the pillar and out thru the centre sun visor.