Lotus Elan and Lotus Elan Plus 2 Forums

I am in the process of replacing a Lucas Sport coil with ballast resistor for a Bosch Blue Line coil - I no longer need the ballasted system.

Looking back through the archives there have been previous debates on earthing the coil case.

The Lucas coil body was eartheda nd on checking with a multimeter the metal body is in circuit with the terminals.

However on the Bosch coil [which has a metal body too] there is no connectivity between the terminals and the body so I cannot see the need to earth the body. As described in an old previous post from Rohan elan-f15/coil-and-distributor-wiring-t1502.html I figure the HT circuit earths through the LT circuit and does not involve the metal body.

Is my reasoning sound?

Richard

Best to earth it if the coil was to have a insulation fault the body would then be live and a spark to your hand or some petrol related earth point would not be welcome. You will need to earth if fitting a 1mF cap for radio suppression .
Neil

Thanks Neil - sounds sensible.

Richard