If you are looking for exact directions and places, there you go

Budhwar Peth : Pioneer electronics, and few more in the same area Hopefully you know Appa Balwant Chowk, or ABC. In ABC if you come from Bajirao road, you need to take a right turn at the signal. Then at the next signal, you go straight, you see shops selling electric lights, fans etc, about 100-200m ahead, there is a temple, right in the middle of the street. This is the pasodya Vithoba temple. Here you would see a bunch of shops selling electronic components. Pioneer is on the first floor of a building in front of this temple.

The other shop is "Rajiv Electronics" in sadashiv peth. This place is slightly more approachable. Pasodya Vithoba is very crowded area. Rajiv stocks good amount of components, and he orders stuff for you if needed. My feedback with this guy is good. He provides stuff in small quantities too.

Budhwar Peth.

JustDial (or even Google) should throw up a few hundred results in Budhwar Peth :-).

Trio Electronics in Budhwar Peth was a quite well known shop a few years back.

+1 for "Trio Electronics, pasolya Vithoba temple area" It is a good shop and good service too.