Clio 182 won't start after engine swap

[Ryan Gillespie]

Immobiliser light on dash flashing, car won't turn over. Dash is out, clocks and stalks are on and earths behind dash are connected.. Any help ASAP?!

 

[welshname]

First thing to check is the earth for the gearbox. Best trick is if you've got a jump lead connect one end to the negative terminal of the battery, then the other to the gearbox. If that starts then it's the gearbox earth. If it's not that then try and earth it to the body too.