Harbor Freight Keyed Battery Switch Install on 2004 Chevy Blazer! 

I have the wiring skill and knowledge of a fucking preschooler. So this video was perfect for me to wrap my stupid head around how to wiring these correctly. There are so many different solutions online this seems considering I have a side post battery. I see conflicting arguments tho about POS or NEG grounded vehicles. It seems most people say to put switch on the negative terminal (In a negative ground car) to avoid the possibility of contact from metal which would cause a spark if connected to the positive terminal. My Delorean is negatively grounded therefore I am going to try this trick just using the negative terminal.