Bests & Worsts Reviews from Amazon

First, the good point- the switch arrived very quickly, the day after I ordered it. It was well packaged and the disconnect switch looks like it is well made. The bad point- the male part of this switch, the post, is too small in diameter for my battery cable to stay attached to it. GAMA's tech told me over the phone that the male post on this switch is the same size as a standard battery negative post- but if that were the case then the battery cable would not have fit snugly on the various batteries that this car has had in it over the years, and I've never had a problem with a loose connection before. After speaking with GAMA I dug out a micrometer to get some hard numbers. The negative post on the Optima battery in my car measures 21/32" in diameter. The male post on the GAMA switch measures 20/32" on the fully rounded portion, and 19/32" on the part that has a flattened spot. This has proven to be enough of a difference to prevent the battery cable from staying attached to the GAMA post. I wish it would have worked but it didn't. I suppose I can swap out the negative battery cable for one with a smaller diameter, but if I'd known that I would need to do that I wouldn't have ordered this switch in the first place. ------------------------------------------ Since writing my review I bought a roll of Corry's Copper Tape ($10) and wrapped a couple of small pieces around the male GAMA switch post to give it some increased size. The battery cable can now grab onto the post and stay on it. So far it seems to be a practical solution, one that I discovered while browsing internet forums. I don't know why GAMA didn't suggest this solution when I called them but they didn't. They would get far fewer one star ratings if they stopped pretending that their switch post is the same size as battery posts when it is slightly smaller and some cables won't stay attached. Offering a couple inches of copper tape to their customers who run into this issue would buy them more goodwill than the small price to them of mailing out some tape but then some companies can be remarkably short sighted. I now have about $9.90 of excess copper tape on hand but at least I managed to get the switch to work, no thanks to GAMA.