Battery disconnect switch

[91Bear]

OK, after my second dead battery in eight years, I need to hook up a battery disconnect switch (and keep my Battery Tender plugged in.) However, one end of the battery disconnect switch is too small to fit over the post and the other is too small to hook the cable to. Am I doing something wrong?

[cep62]

Are you using the negative post?
The positive post is bigger .

[91Bear]

I'm 45 years old with a Bachelor's and a Master's degree. I never knew that. Boy, do I feel stupid. I just kept trying to put the switch on the positive post and then gave up and put the switch away.

Wow. Sometimes I am amazed I can find my way to the bathroom in the morning.