Converting a hybrid to be a plug-in hybrid requires detailed understanding of battery power, a hybrid's regenerative braking system and other features of the car's electrical wiring. Diagrams are invaluable in planning the conversion. Image Source: Sheraz Sadiq
FYI- This photo is part of the:
Plug-In Hybrid Cars - KQED QUEST Flickr Set.
View the companion KQED TV piece on KQED QUEST and discuss the story on the KQED QUEST Science Blog

farlane 69 months ago | reply
Hello there - I blogged a small copy of this photo to Google announces grants for plug-in vehicle commercialization on Absolute Michigan.
Hope that's OK by you!
kqedquest 69 months ago | reply
It's just fine - thanks for using our image and crediting us properly.