Originally posted by CajunSpike
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- AC tap for an alternator driven tachometer added
- 14.7V internal regulator replaced with a 14.0V (might be a 14.2V, can't remember for sure right now)
- 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
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