Unless your a complete buffoon, hooking up a black to black, or a red to red wire is a DIY project. If you had to call an electrician everytime you changed the 12v batteries in your truck, where would you be? "+ to +", "- to -".
There, I just saved you two years of college engineering expenses! I'll have to charge you for the rest of my lessons where I teach how/when to hook up "+ to -" and what wire size to use (hint: Cuban cigars). 😉
Your friend,
NT
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