(Oops if this is supposed to be in "Electrical" But I figured it is a "General" tip")

I was having what seemed to be a starter/selenoid malfunction. Finally got to the point that my car wouldn't even start, absolutely NOTHING would happen when I turned the key, except the gauges moved.

Well after trying to narrow down the problem, everything seemed to work fine alone.

I put new battery cables on, battery to starter, battery to ground, battery to alternator, ect. Now my car starts like it is BRAND NEW. No more hesitation, no more fussyness. I love it. 20 bucks and it starts like a charm now. And all my lights are brighter and my volts gauge doesn't BOUNCE anymore. Amazing huh, duh, ha ha. Try it, worked wonders for my car.