Right then!
The car has been connected to the battery for 24 hours with the interior light circuit fuse disconnected. The battery is showing 12 volts yet the minute you turn the key the lights on the dash dim and fade and the battery has no power to engage the starter let alone turn the engine.
Would I correct in thinking that this is an amps problem? If so, can someone (Vocky,Daz,Timmee) explain how amps and volts work together to turn the engine??