Voltage drops intermittently (1 Viewer)

[random101]

Hi all, my voltage goes from normal charging to battery voltage and then up every 20-30seconds or so. it just happened one morning, everything was fine (actually I installed rock sliders. But I’m not aware of moving any ground points or pinching any cables. https://streamable.com/cr1i0z There is a button from the previous owner, when I push it it seems to come back on… dual battery setup. Any ideas? I’ve changed the bushes on the alternator, the alternator I bought was a 160mm I need a 165mm Anyone got a part number for rock auto for the 165mm?