Attached is a picture of the solenoid, with a resistance measurement across the terminals.
I'm getting 8.2 ohms of resistance. The solenoid gets ~10vDC square wave pulses @ 312hz, so 10vDC/8.2Ω = ~1.22 amps, but since this is wired directly to the cars ECU, I'm a little nervous about my math and want to make sure my thought process is correct so that I don't overdrive something and kill the ecu. The wiring from the ecu to the solenoid looks to be 18 gauge.
If my thought process is correct, I need an 8 ohm 12 watt resistor ... is anyone in disagreement?
And the square wave signal that the solenoid is controlled by
I'm getting 8.2 ohms of resistance. The solenoid gets ~10vDC square wave pulses @ 312hz, so 10vDC/8.2Ω = ~1.22 amps, but since this is wired directly to the cars ECU, I'm a little nervous about my math and want to make sure my thought process is correct so that I don't overdrive something and kill the ecu. The wiring from the ecu to the solenoid looks to be 18 gauge.
If my thought process is correct, I need an 8 ohm 12 watt resistor ... is anyone in disagreement?
And the square wave signal that the solenoid is controlled by
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