The rubber plug that you run the wiring harness up through to get inside the car is probably about a couple of feet from the rear of the vehicle and maybe a foot from the side. You'll spot it pretty quick if you lay down under the vehicle and start looking in the general area I described. The electrical plug on the inside that you have to connect to is located under that driver's side, small cargo bin towards the front of it, I think it was located right on the wheel well towards the top of it. You can get a pretty good idea if you get the Lexus wiring harness, it has a replacement rubber boot that the wiring harness runs through and you won't have much extra wire to reach the plug.
The scubawin does refer to scuba diving, most of it spent in cold water quarries helping a friend with students. Then I went and ruined myself by diving in Cozumel and Grand Caymen, now I don't get nearly as excited diving cold water anymore. Got a friend living in Eqpyt and he is always talking about diving in the Red Sea, is that where Sharm El Shiekh is located?