How do you read a electrical diagram Options

[dimmer]

I am looking at the current flow diagrams, and can't figure them out. Can anyone give me some insight on how they go?
I started up the car and my brake warning light is now on and so is my turn signal light ( very dimly lit). I figure I must have a short somewhere.

[SirAndy]

basically, the current flows from the + of the battery to the - of the battery

Actually, current flows from the - battery terminal, to the + battery terminal in a DC circuit. Try swapping out the turn signal relay and see if that does it.

Actually, both is right, somewhat ...

1) there is the "technical current flow", which is from + to - and is used in all electrical diagrams and circuit layouts ... (this is the one you want to remember when trying to read a diagram)

2) then there is the "scientific current flow", which is from - to +.
the electrons still move from + to - btw., but it's actually not the electrons that move at all (on their own), it's the "holes" or empty space inbetween the electrons that moves, from - to + . by doing so, it "pushes" the electrons the other way (from + to -) ...

confused now? don't worry about it, chances are, you won't need 2) anytime soon.
Andy