Good evening folks. I've just acquired a Gents C7 master clock from an 'electrical engineer'. Unfortunately despite talking a lot about his years of experience of fixing just about everything, I would be surprised if he could change the batteries in a torch and get them the right way round. The clock 'was working' according to him but when I went round to collect it, not surprisingly it had stopped. We took it off the wall, and amazingly, it was fixed with a single screw into a hollow plasterboard cavity wall. I got the clock home, but thought I should check it out before connecting anything. This C7 is a late one numbered 13507 with the black numbers in a circle on the white, square dial. The contact gap was hopelessly wide so I adjusted it and closed it up so I could check the coil resistance. I have a problem in that when the contacts are closed by hand, the resistance across the supply drops to zero, i.e. the supply will feed into a short circuit. The rheostat that is supposed to adjust the current has no effect. I have checked the coils and they are not short circuit. I have concluded that somebody has messed around with the wiring. I have the manual, but that only shows how to connect slave clocks and put a system together. I really need an internal wiring diagram for the clock in order to check for the correct wiring, but this is not shown in the manual. There are several terminal block where wires could be interchanged, but without the diagram, this is hard to determine. Please can anyone help with an internal wiring diagram? Thanks in advance.