2015 Jeep Grand Cherokee electrical gremlins

2015 Jeep Grand Cherokee electrical gremlins – any shop that actually traces wir

I’ve been chasing a weird issue on my WK2 for months where the dashboard lights flicker randomly, the radio cuts out, and sometimes the windows won’t roll down, but every garage I’ve taken it to just wants to replace the battery or alternator even though both test fine. A guy at a off road club mentioned I should look for a place that does proper diagnostic work and pointed me toward a shop offering Jeep complete electrical system repair that actually uses wiring diagrams and checks grounds instead of guessing. Has anyone here dealt with intermittent electrical problems on a Grand Cherokee and found a place in Dubai that doesn’t just throw parts at it? I’m losing my mind over this because it works fine for weeks then acts up again. Not sure if it’s the TIPM or just a corroded connector somewhere, but I need someone who knows how to find the root cause.