MGB Wiring Harness Set - with Electrical Tacho

Wiring for an Alternator instead of the original Dynamo using heavier wiring. As a rule any Ammeter wiring is also removed as an Ammeter does not give a true reading with a Alternator. Many Ammeters do not have a large enough scale to use with a modern Alternator and the added resistance of having an Ammeter in circuit may damage the regulator of a modern ACR Alternator.

Modification to upgrade the standard Dynamo wiring if using a Dynalite unit up to 42AMP (Alternator in a Dynamo casing), the charging wires and ammeter wires (if fitted) are upgraded to heavier cables to cope with the higher outputs of the Dynalite unit. You may be also interested in the Dynalite Dummy Control boxes that are designed for this set up. If your Dynalite has a 60AMP rating, please contact us to discuss your needs.

Four wires added to Harness to supply heavy feed to Fan and provision for Thermostat and Over-ride Switch on dash

Position of Lamps required (Right,Left or Both) and position of switch.

Wiring for Extra Front Lamps which can be used for Spot or Fog Lamps. Circuit incorporates a Relay and wiring to Dash for Switch.

Wiring to fit an Accessory Socket on the Dash which can be fed from Ignition or a permanent feed.