My brake lights and power windows stopped working?

[PazzaAE86]

As above! I parked the car up, did an S50 conversion and just went to drive it but the brake lights dont work and the windows dont work. They did before the conversion, but i dont recall faffing with anything relating to that?

Thoughts?

[Brianmoooore]

How about the door mirrors and heater fan?

[PazzaAE86]

Heater blows fine, didnt check the door mirrors.

As a side note, my fuel reserve warning light comes on really soon compared to before too.