the rear central locking works fine both cab doors lock and unlock straight away ive replaced the C/L/MODULE checked fuses checked wiring on all doors cannot find any thing wrong .out of curiosity near the c/l/fuses near the steering under the dash there is a relay switch WHITE,would this be anything to do with the central locking.also the cab light dosent work is that connected to the cause please. stuart

STUART DUHEAUME, April 2016

sorry about that. the central locking works fine in the back doors and side door if i disconnect the cab doors but if i reconnect both cab doors all doors lock and unlock straight away on the central locking regards stuart

STUART DUHEAUME, April 2016

You say what things work - you say the things you've changed and checked - but you do not say what is wrong - what fails to work.

I doubt very much that the cab light has any connection to the central locking.

Good Luck..., April 2016