Electrical problem 2007 yaris

[Eroglik1]

About 2 months ago I lost power to my steering wheel at a drive thru for a little bit but it came back when I started moving. Has not happened again since but the other day I was on highway and my stereo shut off and I seen the lights on the dash flickering . Some reason I flipped the headlights on for a second and all electrical went dead but came back in after a second. It is a new battery and I had alternator tested . What could it be. I still have been driving it after that. I do have an amp hooked up to the battery.

[CTScott]

Check the connector to the ignition switch. Start the car and then wiggle each wire in the connector and see if wiggling one particular one makes the ignition cut out. I had a similar issue with my headlights and found that one of the pins had gotten sloppy due to the number of times I had inserted and removed it over the years.

[Eroglik1]

Thanks I will try that. Is it easy to get to?