need help to hook up switch for turn on

i have just installed a ps2 and a moniter , going to hook up the sound soon, i need help  to install a switch to power up the inverter and  the ps2 at once, the power inverter is too far in the back of the van  to go turn it on , the ps2 is under the drivers seat.OH i have a 96 town and countrymaking it work

real easy. u can use a relay to do it. put it in series with the power wire and ground it in the back. on pin 30 put the inverter side of the positive wire. on the top pin 87 put the positive constant wire. on 86 put a ground wire. on pin 85 put a wire going from the relay to the one side of the switch. on the other side of the switch go to a constant positive wire.  what will happen is when your switch is on it will activate the relay and connect 85 and 86 and then make the internal relay switch switch from 30/87a to 30/87. ON PIN 87a PUT NOTHING!!! if you need a diagram email me at installer4life@aol.com and i will draw one and mail it to you. real easy but sounds complicated. it should take like an hour tops.