| this. I wired up a red LED with a 550 ohm resistor and hooked it up to the harness side connector(yellow connector/aac) and I did not see any pulse on the led no matter what value I set the aac to in data scan. I did observe the following though: 1% LED lit solid but dim. Measured 1.3volts across LED 100% LED lit solid and very bright. Measured 2.7volts across LED The brightness and voltage increased as I raised the duty cycle of the AAC from 1% to 100%. To me this shows the ecu is outputting some amount of variation but doesnt seem right to me. Shouldn't the led be blinking? And why would the voltage be changing?
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