I have a 98 Jeep Cherokee XJ that I'm saving for a rebuild that's been sitting for 4-6 months. I watched videos on starting engines after sitting but haven't found one that addresses electronics. I put fuel stabilizer in the gas tank, just got slack on starting the engine every week and killed the battery.
Last time it cranked, zero issues like it always has. The battery charger could only get the battery to 90%, but was plenty juice to crank the starter, it has started on much less before. Right now it isn't starting because looks like the solenoid has gone bad, the starter is spinning but not engaging the flywheel. But when the key is turned to the on position, the usual light display, beeping and the noise I hear from the fuel pump isn't happening. Just a loud click from the power going to the starter I imagine. So I'm hoping there is a reset button or process to turn the computer back on. I know replacing the starter/solenoid and getting it started might be all I need, but I was wondering if I can check electronics without buying a starter.