Deltran battery tender plus ??
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Hi, The easiest way and least expensive is to splice in a set of wires in the amount of footage that you need to keep the actual box inside the house. You can do it by using wire between the end eyelet clips and the box, splicing on both ends. I use 16 guage primary wire, but you could probably get away with 18 guage for up to 100 feet. Most battery maintaineing companies sell a set of extension wires, but they are usually more expensive than using your own wire. Just make sure your splices are tight and well taped, and keep the spliced areas out of the weather. Been doing it this way for many years with no problems. Also it is a good idea to install a set of ring terminals on the battery with sufficient wire to run to somewhere under the front bumper. Terminate the wire with an insulated quick connect/disconnect, and fasten with strap ties to something convenient. In this way you can just plug in to the quick connect anytime you want without even opening the hood. Just make sure the corredponding wires coming from the terminal match the end going to the battery as to polarity, and insulate with wire loom any wires touching metal and or hot engine parts. You can usually do this with the ends the companies include with their battery maintainers and some additional wire and tape.
Good Luck






