Bought a Ford Fiesta with an automatic transmission to tow 4 down behind our Gulfstream Crescendo diesel pusher. Tow it first time 360 miles no problem. Followed the instructions to the letter, the ca...
Simple solution: Use a knife switch for the battery cable, and get a memory saver...it's powered by a simple 9V battery and plugs into the cigar lighter. Maintains the radio, clock and other electronics automatically. I bought mine at WalMart, but never used it cuz the HHR doesn't need it.....Dennis
On edit: Here's one on Ebay but you should be able to pick one up at any autoparts store....D