is how van 12volt positive or negative

[hercules]

Hi im just wiring a delay unit to me van on the wiring diagrams for it show two ways of wiring the delay unit up wich is easy but im not sure the supply form the fusebox is positive or negative i feel it positive but just thought i ask u guys thanks chris

[syncrosimon]

negative earth, positive feeds to fuse box.

[hercules]

so i take it that it is 12volt negative supply form the fusebox

[hercules]

here a picture of the wiring which one do i use guys
[IMG:768:1024]http://i192.photobucket.com/albums/z100 ... new061.jpg[/img]

[matt-the-sign]

Top one - Negative earth.

Take a look at your battery, the Negative is attached to the bodywork ... the earth.

[hercules]

thanks iv got it now,

[Ian Hulley]

Sometimes if you have to ask you shouldn't be doing the job in the first place

Ian.

[hercules]

well if you neve ask you neve lean that why i ask so the next time i no what to do dud and maybe pass it on to someone els in the same place and say me pay some one to do an easy job like this