JohnWe have a 240 so many of my observations might not apply to your situation. I will say, however, that adding the stereo was one of the neatest improvements we have made to the boat. Very cool. I also elected to buy a higher quality car stereo while buying marine speakers. It seemed to me that the marine stereos were higher priced and lower quality. In terms of running the wires I agree with the other posts to your inquiry. A coat hanger. a lot of patience and ingenuity go a long way.By the way, we have been amazed at how much play time we get from our 12 volt battery. We like to play CD's and we can sail all day and still have plenty of battery to use our lights to get back home at night.Good luck and good sailingBill Welschs/v RenewalCertainly the results are well worth the effort.