Hi all , new here . I have a 94hp in a big truck mounted on the dash , i have 2 strips of wood velcroed to the bottom on each side of the heat sink to make the radio sit level and allow good air flow underneath . In any case i had this idea to hook a red led to the fan and secure it under the radio so when the fan comes on the underside of the radio will glow red . This will allow me to know when the fan is running so i can keep my talking down while it cools , also if the light stays on for a long time it could warn me of fan failure , not to mention i think it would look cool .
I can't seem to find if the fan runs on 5 , 8 or 12 volts . Looking at the schematics it appears to be 8 vdc but i am not sure . It seems J4 and J8 are power connectors for the fans and my single fan is hooked to J8 , i will more than likely hook on here . I don't believe the led will cause an issue with the fan operation as it is set up to support 2 fans , plenty of power .
My questions here are , does anybody know the voltage of the fan ? and , what is the best way to drop the voltage to around 2.5-3 vdc for the led . I know a 150 ohm resistor works great for 5vdc , but not sure on the value for say 8 or 12 vdc .
Thanks all .
Don
I can't seem to find if the fan runs on 5 , 8 or 12 volts . Looking at the schematics it appears to be 8 vdc but i am not sure . It seems J4 and J8 are power connectors for the fans and my single fan is hooked to J8 , i will more than likely hook on here . I don't believe the led will cause an issue with the fan operation as it is set up to support 2 fans , plenty of power .
My questions here are , does anybody know the voltage of the fan ? and , what is the best way to drop the voltage to around 2.5-3 vdc for the led . I know a 150 ohm resistor works great for 5vdc , but not sure on the value for say 8 or 12 vdc .
Thanks all .
Don