i could use one of those ipod connectionz... how much did it cost?? ive taken out my stock head unit several times... doesnt have a security code on it... i didnt experience any difficulties whatsoever. only realised that there MIGHT be a problem only after i took out the head unit the first time, so shouldnt be a worry. i dont remember having to disconnect the battery 2 do that.. just as long as you dont have your car running while youre trying to take it out hahaha! but yea, in general dont keep the key in the ignition if yourgonna do work on the car.. yea.. in this case i think its safe to leave the batt. on. i could be wrong - forum please tell me if i am, but in my personal experience i havent had 2 take off the battery connnections to do a small job like that. oh yea, you may want to check behind the glove box for the extra space you are looking for. the glove box is easy to take out. there should only be one screw in the way of you litterally pulling the glovebox off its hinges. just the right pulling pressure would cause the glove box to SNAP off. to put the box back, simply snap it back on, replace the screw. jase