Toyota hiace multiple electrical issues

[CyzfromTaz]

Hi,
I have multiple electrical issues with the hiace I just bought (not sure if they are related).
The fan (AC) is not working as well as the hazard and reverse lights and the honk. It looks like all fuses are good.
Any advices on how to tackle those issues would be greatly appreciated.
Cheers

 

[James]

Have a look around behind the radio, I wonder if it has been changed and a plug has not been put back in correctly

 

[brianmoooore]

Diagnosing faults like this has become a bit more complicated in recent years, with the advent of more an more complex body control modules, controlling ever more systems, but with faults affecting multiple systems, checking earthing points is a good place to start.
Also worth doing a good Google search and checking owners' forums. You may not be the first to suffer these exact symptoms, and they might point you to an easy fix, like on the little Corsa I bought a few years ago for my son, at about a tenth of its true value.