if you mean earth connections then they are good i did manage to get it run for a little while throttle working ok but a little rough with management light on switched it of tried to find codes none stored tried to restart it will start up to 1000 rpm then dies does not respond to throttle
No such thing as an earth on a car....unless you have connected the body work to a bloody great big ground spike
Its a common mistake
but as an electrickery bod you're a pedantic **** over the this term. In all automotive manuals, they refer to the other connection of the battery as earth, whether that's a negative earth used on modern cars or a postive earth as found on cars years ago.
have a look in the back of your Zafira Haynes manual, all the simplified diagrams show a
even though you don't have a big earth spike in the ground.