Electrical flicker

I had that on my jeep not that long ago. Check the battery connections and make sure they are clean and tight. Be carefull though as I overtightened the neg and I had to buy an aftermarket connector.

it is very posible that your problem is a wet fuse box. I found mine to be wet after every rain and frequently causing body systems to activate on thier own such as the heater will run unless turned to the OFF position,or it may be interior lights,or sometime even parking lights. So if your passenger carpet is wet after a rain check into your fuse box .It will likely be wet also,I recomment finding that leak (good Luck )and if you do find it let me know where,it's not the condensate drain so look for a rocker channel drain plugged with leaves