Other than overlooking something dumb (lights, etc).
Even a brand new battery can be bad, thus a used one might not last as long as it was promised. That's the big reason for warranties on batteries. You might want to have it thoroughly tested at a parts store.
The only thing that I can think of that might be hidden but still be "normal" wear might be the ignition switch.
A while back I constructed toggle switch ignition for my Jeep. Over the years and over my Jeeps, I got tired of the keys falling out and the ability to start my Jeep with no key at all, the pain in the butt of replacing the switch (looking back, it wasn't so bad to change!)
Regardless, it's done for right now, and is easily reversible, as no wires were cut.
While building my new system I needed an ignition switch for a "base", That was easy, I used the old one, took it apart and modified it.
While taking it apart there was lots of copper dust and filings present. I can see how "power" might travel through the dust and "power up" whatever that segment went to even if the switch were off. Am I making sense?
I wiped off some of the dust in picture 1, so it's not just freshly popped open. Those rollers roll as the switch is activated and connect the strips on the body together.
However,
You can see the extent of the copper dust drooled down on the plastic connectors as the switch hung on the column for years.
Below are pics I made of the worn/ dirty switch torn down and also the way I modified it to now have a key-less and totally reversible system. Picture 4 shows how the old ignition switch snaps right back into its connectors just as it came out!
Yes, I incorporated a simple security feature into this so that my Jeep would not want to wander off when I wasn't around.
The Medic
Images (Click to make bigger)
Wednesday, June 19th, 2019 AT 7:51 PM
