Hi guys!
I just started Fallout New Vegas and I found ED-E just lying in the the Nash residence.
I've got all the parts except for the two sensor modules that you need. (Thought it was 2 scrap electronics instead...)
So are there any good locations in the starting area for sensor modules?
Thanks for the help in advance!

Your best bets are in toolboxes, shop merchants, or if you're already at New Vegas in the game, the Cerulean Robotics plant supplies many modules, scrap metals, and wrenches too.

Theres a supply cupboard in the RepConn Test Site that is littered with Sensor Modules/Pilot/Lights/Tin Cans/Scrap Metal/ Scrap Electronincs and some Fission Batteries IIRC.

Toolboxes and Metal Boxes arounf Workbenches are your best bet for finding them.

Listen to Papafern. He is correct.

But in general, if you want something, search high and low for it in places where you would expect to find it. Sensor Modules are techy things, found in utility closets, next to Workbenches, and in robotics facilities.

There are pre-placed Sensor Modules in Victor's shack, Lone Wolf Radio, & in that trailer behind Chet's store. Occasionally, vendors will stock Sensor Modules, but you should have no reason to ever buy Sensor Modules.

-Nukeknockout

http://fallout.wikia.com/wiki/Sensor_module

This is called the fallout wiki. Anything you wanna know go to this site. But here, this is the sensor module page. This should help.

Cheers

Nothing like some direct reliability from fellow forum members though.

Alright thanks for the feedback!
Although I checked the fallout wiki before returning, I couldn't seem to find the ones they were talking about.
I'll go back and try again tonight.

There are several laying around the workbench area in Novac.