Many British cars are wired for 5-terminal alternators. As the 5-terminal alternators are now obsolete, 3-terminal alternators may be supplied. These wiring instructions, provided by Lucas, outline the conversion procedure. To wire a 3-terminal Lucas alternator in place of the now obsolete 5-terminal alternator, use plug kit #540-280 and proceed as follows:
Disconnect battery
Cut off wiring terminal plugs from alternator wiring
Remove and discard link wire (see illustration below)
Remove wiring harness tape approximately 1 inch
Slide small insulator over remaining IND wire (brown/yellow), and solder to the small terminal
Slide larger insulator over positive lead wire (brown/white), and solder to the larger terminal
Separately tape back onto harness, the brown and black wires not used as they are no longer required
Connect the small brown/yellow IND wire to the small terminal on the alternator
Connect the large brown/white positive lead to either of the two large terminals on the alternator
Many British cars are wired for 5-terminal alternators. As the 5-terminal alternators are now obsolete, 3-terminal alternators may be supplied. These wiring instructions, provided by Lucas, outline the conversion procedure. To wire a 3-terminal Lucas alternator in place of the now obsolete 5-terminal alternator, use plug kit #540-280 and proceed as follows:
