I have a 2007 Honda Fit Sport. I was pulling in to a parking spot tonight and noticed that the power in my car started to flicker when my wheel was turned at the extremities, (was performing a very low speed sharp turn to get in to a space, nothing crazy). The power went in and out a few times. Backed out of the space and did it again just to make sure it was something predictable and that I could reproduce it... sure did, something perhaps with the power steering?

I did just have work done about a week ago from a trusted mechanic. They worked on replacing the alternator drive belt, among some other things relatively minor (headlight thing I didn't have time for, wheel shake, etc). Any thoughts on what could cause this type of power fluctuations? I had the heater running at a very minor level, fan on 1 speed. I have not noticed this fluctuation before tonight, but it was very apparent tonight.

 

Probably normal. The power steering is all electric and can use A LOT of electricity when it gives assist.

Same would happen if you pull on the window switches while the windows are already rolled up. Lots of load on the electrical system can be seen as dimming lights.

You could attach a voltmeter and monitor the charging system as you drive around, just for assurance that it's working. Or not working.

 

This is like, mass power drop. Not just a simple dimming. Its pretty substantial.

 

There's always the possibility that they didn't fully tighten a battery terminal connection, giving you a high resistance when there is a lot of draw (EG, powering the electric PS). So the 'usual' troubleshooting steps apply: Checking all connections for tightness and/or corrosion, being sure that battery electrolyte is topped up, etc.

Bring it back to the shop that did the work. They can check the connections, perhaps put a load test on the charging system while turning...