DIYPNP Main Board Assembly First, you will want to decide which components you will be using, as not all installations need all components. Here is a list of what parts go with what circuit. Note that U3 is used for multiple circuits, and must be installed for any of the […]

Article by: Jon Evans Article applies to: all e24 / e28 / e30 / e32 / e34 models with an automatic transmission. I carried out this repair ages ago. Although you could still select reverse (and all the other gears), my reversing lights didn’t work, and my passenger side rear […]

Article by: Bradley Denton What is waste spark and why do I want it? Both the m20 m30 engines use a single inductive ignition coil and a distributor cap/rotor to fire the spark plugs. The coil is triggered by Motronic via a transistor. This is a simple and effective method […]