Lucas C42 Dynalite - Negative Earth

This 12V Dynalite unit replaces the Lucas C42 and is for negative earth applications only. It has an output of 40A compared to 25A of the original and weighs 3.5kg, compared to 6.0kg originally.  A C42 for positive earth applications is also available.

To ensure that the dynamo on your vehicle is a C42, it should be stamped with 'C42' on the case. If you cannot find this, check the distance between the mounting flanges, it should be approximately 174mm.

Dynalites are not supplied with a pulley or fan fitted. However, as the shaft diameter of the Dynalite is 15mm, the fan and pulley from your old dynamo will fit. If you do not have a fan and pulley we able to supply these separately.

When connecting the Dynalite to your vehicles electrics, there are two options:

1. Use the existing control box as a junction box.
2. Dispense with the original control box and purchase from us a dummy control box, which acts a connection box, but also has an integral fuse. The integral fuse, fuses the output of the Dynalite, to protect the wiring of your vehicle in case there is a short circuit within your existing wiring. (This is the recommended option, due to the fusing capability).

Wiring diagrams for both methods of connection are shown on this page.