Can i suggest wiring it from the ciggerette plug.
You can easily pull off the storage space around the ciggerette. You can then hardwire your led leads to the ciggerette plug make sure you find an earth point somewhere to prevent your electrics from blowing. The all you need to do negotiate the wiring under the carpet which is a little bit of a pain but still easily done with some patience.
I did a simerlar thing in hard wiring as i needed a 12v cig socket closer to the top of the dash and thats worked fine never had a problem. I can even plug two things in at once like the road angel and mobile phone charger.
Problem with that is that they'd be permanently on, it would be beter to hook it up to the same circut that controls the interior lights so they only come on when needed.