I wanna replace the bulb just hesistant i might break something or disconnet some wrong wire.

 

Which "thingy" exactly? It wasn't too hard.

 

Last time I looked under my hood, just the coolant reservoir was there. It held in only by the battery's grounding wire. Can't really mess that up. Just unbolt the wire, uncap the reservoir and slide it right out.

 

My resevior bottle wasn't held in by any wires, just a slot on the side of the battery box. It just slides stright up and it's out. Just don't drop it putting it back in. It falls down there a looooooong way!