Tips on High Torque Starter installation in later MGBs
Later MGBs (1975 - 1980) uses a "cold start" wire that gave an extra boost of 12v to the coil on start-up. I assume this feature was to improve the starting of MGBs in cold weather. This "cold start" wire came off of the starter and went directly to the coil. This wire is only energized when the key is in the start position. It is suggested by the manufacturer of high torque starters that because these starters spin so rapidly, there is no need for this feature. So, if you have a 1975 to 1980 MGB, and you install one of our high torque starters, you will find you have one extra wire (should be white/green) that was attached to the original starter. In most cases this wire can be taped up, secured, and not used. If you do decide to use the "cold start" wire, it should be attached using a diode wire (part RAC901) and attached to the lug on the bottom of the starter UNDER the rubber cover, as this terminal is only "hot" when the key is in the start position. See the photos below.