Uneven RPM

[ndutton]

Would this be appropriate(assuming the mounting works) to put on an A4?

Sure. I've had one for years and it has performed well. I'll confess however I've had three modifications done to it:

1. AC tap for an alternator driven tachometer added
2. 14.7V internal regulator replaced with a 14.0V (might be a 14.2V, can't remember for sure right now)
3. Excite wire added

The excite wire wasn't my idea, it was done by the shop when they replaced the regulator. It gets the alternator producing immediately rather than having to rev to 1000 RPM to wake it up. The first time I connected it to the coil + terminal and it performed exactly as expected, sort of. Sure enough it was charging at the launch but the single wire circuitry backfed 12V + to the excite wire so when I switched off the ignition the engine kept running. Not cool. The solution was to connect the excite wire to the starter solenoid R post, energized during starting but disconnected after startup. Way cool.

The picture is pre-modification

[CajunSpike]

So the unmodified install looked like it was plug and play then.


Good to know in a pinch.

[ndutton]

So the unmodified install looked like it was plug and play then.

Almost. I neglected to mention a minor modification to the lifting eye bracket made with a grinder to allow sufficient swing.