Want to add in second battery with a Perko switch. Would like to use the existing battery cable in the boat. Question is, can I cut off the connector that's on there and crimp on a new one? Or solder? I need to change the end at the battery to an "i" type connector to connect it to the Perko. Also, what type of connector would I use to attach the ground to the two negative terminals? The directions and diagram with the Perko switch seem simple, but I'm just not sure what to do with regards to the connections. Thanks.
You need ring or spade terminals. Go to a welding supply to get extra cable; it is much cheaper, and better quality than automotive. Auto parts store will have the crimp terminals you need. You don't have to buy the crimping tool, just hammer them flat on concrete.
I recommend not installing a perko manual switch. Spend the extra 25 bucks and get a battery isolator/combiner. Easy to install, gives priority to the starting battery and s automatic. No need to open a hatch and manually switch anything. Here is a link to the product I am talking about. It is the 1314.
I HATE the perko! Dealer installed one on the new boat when they added the second battery and it's a freaking pain! I had an Isolator on the Tigé and never had any issues. I can never remember to switch the blasted Perko! I'm changing it asap!
Brett, Are you saying the spearator is easier to connect than the Perko? I found this diagram of installation : http://www.fourwh.com/batteryseparator1315.pdf The blue and black wires simply attatch to the auxillary batteries negative terminal and the brown goes to the auxillary batteries positive? What's the auxillary light indicator and momentary boost switch all about? Sounds like those are optional?
Bob, to make it work you don't need to install 2 of the wires. The blue and brown wires they show are an extra feature you can use if you want. To make it work you only have to run the 2 main wires to the positive of the 2 different banks and a small wire to a ground.
Brett, will the batteries switch if one of them gets lower than the other. My concern is, I moor my boat and if the bilge is running, will it switch to the other battery? I know with a perko, I could leave it on "all" and it would run both down...
Chris, are you planning on having one battery to start and 2 batteries wired in parallel for the stereo. If so even though that is 3 batteries that is considered a 2 battery system because the 2 batteries wired in parallel only count as one battery.