I’m having trouble with my 2004 Grand Cherokee not starting. When I turn the key I get absolutely nothing, until 1-5 seconds after I turn it back from the crank position when all of my dash gauges flap back and forth for a few seconds. I am able to get it started after banging on the negative battery cable and the terminal. The battery cables do not have any corrosion.
A few months ago my dome lights, power windows and power locks stopped working. The dome lights have corrected on their own, and the power locks work only from the front passenger seat now.
Do I need a new set of cables? A new battery? Something else? Thanks in advance.