Dinghy Towing switches for fuses

Please excuse any need to repost, but have been searching for an hour. When I was researching getting ready to tow a vehicle behind our Seneca, I found switches that would make it you didn't have to pull the fuses.

Well, we purchased a Traverse and set it up with a Blue Ox rig and a "Brake Buddy". All is working great! So now I'd like to add the switches, so I don't have to pull the fuses. Searching like crazy, but can't find these switches. Without too much trouble can somebody point me back to these switches? Thank you in advance for the assistance.