Hi Anomaly. I don't know why you haven't had a better response yet, but the best power source you can ask for for switched power I found is under the left side cover. Under neath the cover, you'll have to look for it, but there is a open plug that is used for some reason we are not sure of but it contains a switched power source when the ignition is on. I bought an adapter that fits into that power source (no splicing or cutting into the wires) and then used that wire to power a relay like a fuseblock --- which is what I used to power all my accessories. Have a look under the cover and see what I am talking about.