Originally Posted by Qben
I haven't installed my battery tender yet. Was just going to wire it direct to the battery, but I guess I could buy a powerlet plug. From what you guys have told me, I assume it is a non-keyed power source (always on)?
Your starter is right under that cover where the socket is installed. The starter is connected to the battery by some massive cables because the starter needs to pull so many amps. The socket, then is connected with really short cables to the + and - posts on the starter. So when you plug into that socket, it's almost like plugging right into the battery. Definitely unswitched, which is why it's good for battery tenders and tire compressors. I lopped off the cig plug on my tire compressor and then wired in a powerlet plug specifically for this reason.