Volkswagen Ignition Coil Wiring Diagram

15 typically will connect black wire is used for on ignition live circuits such things as the coil and windscreen wipers will connect to this 31 31b nearly always brown wire is used primarily for earthing a circuit 85 86 87 87a typically seen on a low current high current trigger circuit normally will be on heated window on vw s.

Volkswagen ignition coil wiring diagram. You will find excellent wiring diagrams for all makes years and models of vws at vw wiring diagrams. A reading of 11 000 ohms or more or a reading of zero indicates a bad coil. The plus sign is where the hot wires go. Place the red or black lead from the meter to the center of the coil secondary post and to either one of the terminals 1 or 15 on the coil.

The only time more spark than the stock coil can provide might be needed is when the engine has a very high compression. Vintage vw wiring diagrams repairing the wiring on your air cooled volkswagen can be one of the most complicated and challenging parts of the restoration process. Look at the top of the coil closely by the 2 small terminals there will be plus and minus signs. It is likely that your vw s wiring has been tampered with by different owners over the years.

Go turn on the ignition switch with a volt meter find the wire with power it goes to the plus side of the coil. For additional wiring diagrams info see electrical system e in the technical bulletins index. The negative side of the coil goes to the distributor. If the coil needs replacing use a stock coil.

A bad coil will show a higher reading then 3 4 5 ohms. A reading of 9 500 10 000 ohms sometimes less indicates a good coil. Coil wiring pig tail connector repair 3 5 3 7 duratec 9u2z. Wire sizes on these and most other wiring diagrams are printed on the wire in mm 2 for americans who express wire sizes in gauges see this wire size conversion table.

Some of the fuse boxes pictured in the diagrams are rotated 180 degrees from how they actually mount in the car. Ignition coils in some volkswagen engines can cause a misfire due to broken and even melted connectors that result in misfire codes.