bosch 044 buzzing

[McGyver]

So i know that the 044 is a noisy pump, but it seems to get really loud after driving for 45min or so. I have it powered in parallel with an early model low pressure pump in the tank.

So today when i was putting my windows up, i noticed that the pump gets nice and quiet when power is going to the window motors. Is that normal?

[nando]

it's probably just the voltage drop

[McGyver]

Is that normal? I've noticed that when im just idling when the turn indicator is on it dims the OBC noticeably. (probably only noticeable cuz im anal) It has a less than a year old bottom shelf Advance Auto alternator in it. The last on only lasted 9 or so months....

[FredK]

Your alternator may be on its way out, if your turn indicator is noticeably dimming the OBC, or you have a bad ground.