Testing out my PWM fan with an XY-PWM Generator on a 1978 Chevy K20 LS swap!

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This is a brief video showing a basic controller and wiring needed to operate and test run a PWM or other PWM device. Final install will be controlled by a Holley Terminator X, but this $10 PWM Generator is a great test bench to determine the operating parameters of the device you intend to control.
The truck featured is a 1978 Chevrolet K20, with a 2003 5.3L engine, original SM465 transmission, and original NP205 transfer case. The fan is sourced from a 2010-2012 Ford Fusion.

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27 фев 2021

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Комментарии : 15

@AibekToroev 19 дней назад

Thank you very much. Purchased the same PWM controller to test my AUX FAN. It is working. I have checked the power wires and there is 12 volts. So now I need to check the PWM wire which comes from the ECU.

@craigd1275 10 месяцев назад

LS Swap I was looking at that engine and thought "that's not a 78 engine." Wish I still had my 73.

@user-xh7by2lt7v 11 месяцев назад

Love the shroud, any more video of how you make it

@alialasm8 2 года назад

Good Job.

@ElCyberMonkey Год назад

Gracias . informacion muy util

@tgy119 5 месяцев назад

Can you run pwm control signal wire in parallel with another controller? For example, if your ecu is setup to control your fan but you also wire in this little pwm controller by tapping into the same pwm signal wire..for instances where you want to run the fan harder than the temp settings in your ecu or for when ecu fan control failed you have back up control.

@alaskatech1562 5 месяцев назад

I don’t believe you can run parallel signals. Unless you were to isolate the two circuits by switch or diode, I think the signals would interfere with each other. I don’t see an issue with running a backup control as if one signal failed the other won’t interfere.

@kensproject9564 Год назад

Does it work on variable temperature and changes speed when engine gets hot?

@alaskatech1562 Год назад

The PWM controller shown will not. The Holley Terminator X does, and is what I’m using to control them.

@joseb1700 10 месяцев назад

So u use the neg trigger from the term X to control the relay n then the pwm just controls the speed correct??

@alaskatech1562 10 месяцев назад

The fan itself has a built in PWM relay, and I use a custom table in the Terminator X to send a PWM (%) signal to the fan based on engine temperature.

@joseb1700 10 месяцев назад

@@alaskatech1562 can u just run them separate n just have term just trigger at temp n just send it at high? Don’t wanna use an I/o up if I don’t have too??

@alaskatech1562 10 месяцев назад

@@joseb1700 I didn’t use this part at all in my setup. It was strictly just for testing what PWM signals the fan accepted, which got input into the Terminator X. You can do what you’re describing, but at that point there’s no point in using a PWM setup, as the benefit of this is to utilize the fans’ ability to run only at the speed necessary to cool the radiator and not draw unnecessary power.