leshby, if you give us the model number of the engine, we can see whether its electrical system is covered by the Tecumseh technical manual. A picture of the wires would also help: the type of connector helps to identify the electrical system.
Please also give us the model and type numbers of your dead Briggs engine, so we can try to match the electrical systems.
The general principle of the Tecumseh electrical systems is that the DC output is for battery charging, and the AC output is for the mower's lighting system.
Last edited by grumpy; 25/02/12 05:50 PM. Reason: Clarification