Sounds like TDC sensor is your best bet first mate... new they are only a few quid, so for peace of mind id go new. However, any reasonable thickness two core wire will suffice as an interimm, originaly they are red and white, about 0.5mm^2. If you get them the 'wrong' way round dont worry, that'll just give you some ignition advance at the lower end - see articles section on the site. Id solder and heat shrink them carefully though, the signal is fairly weak.