As the tread subject header suggests, I have a non functioning central door locking system on my 1989 62 series wagon. I suspect it is a power supply issue but am making a meal of trying to find where the power supply comes from. The manual tells me it comes directly from the battery via a white wire through a 30amp Power Fusible Link. Anyone know where this is? On the other side it goes via a Blu/Red wire to a Door Lock Control Relay. Anyone know where this is? Thanks in advance.