Power Brake Booster
 

The brake booster (2003 Montero Limited) has failed The Vehicle was not driven for a while and looks like "FIELD MICE" had a ball, they made several "nests" in the engine compartment and chewed up some wires, the electrical lead going the the booster (through a connector) was also cut, I removed the connector and spliced the wires directly (correctly by color) , but the brake booster is still not working, Vehicle has no power brakes and is unsafe so it is standing. Anything I should check?. Are there other electrical leads I should check. Please advise. Thanks,
Kamal