Hello, I need some advice on the wiring of a coil on a EA81 engine which I am currently bench testing so it is out of the car. I know I have to have a live feed directly from the battery onto the postive side of the coil. I have the following wires from the distributor which I am not sure of

 

Yellow

Black and white

 

Does the yellow place on the minus side of the coil and the black and white to the postive side of the coil ?

 

Is there any other wires that need to be on the coil from either the distrubutor or engine ?

 

Thanks in advance

 

Tucker

heres a link to a partial ea81 fsm with wiring diagrams

http://www.ch601.org/engines.htm

You need a battery positive to the + side of the coil.

 

The black/white is +

The Yellow is -

 

In a typical installation you will have two black/white wires to the +: Distributor and ignition switched battery supply. The negative will have the yellow wire from the distributor and another yellow wire that is the tach signal wire going to the tach/FPCU/ECU etc.

 

Important to note that the distributor body is grounded to the engine block so is battery negative for a bench test....

 

GD