I did, four holers. I got two of them, one for the 'Runner and one for the Cruiser. Cruiser will be hardwired with circuit protection doubled. 'Runner is merely plugged in to the single factory ciggy lighter. So far it plays and charges my Ipod, runs my GPS, charges my phone and has room to spare.
TWO (2) Wagan 12V Quad Socket SplittersSM-WA-9139-2 This one works OK
LENMAR SPP-04 Power Port 4 Outlet DC Power Socket (LEN - eBay (item 360120341712 end time Jan-19-09 12:17:25 PST) This one is much better. I got mine off Amazon but they seem to be out now. Here is an ebay one for the same price.