Common fuel leaking spots

[gs500dk]

Hi i parked my gs500 at home about 2 weeks ago and havent driven it since then i suddenly after 2 weeks have passed i notice a big spot of gasoline under the bike, where is some of the common leaking spots
its a 1991 model
i also have a problem with my neutral light not turning on the old owner who i bought it form said that it just stopped working and he didnt want to fix it

[Armandorf]

change the hoses(OEM=really simple-pre formed and exact size or cut a common hose for gas, more work to route and fit), if you can also replace the petcocks.
 if you want to cure only one spot you will end up chasing your tail-. common spots are petcock connections

[HPP8140]

Check the simple stuff, like neutral bulb burnt out and go from there to trace wiring