Now came across this video. I have this same fan unit with relays and fuses on my land rover, originally was V8 but now a TD5. Its impressive the amount of air these fan move. Far better than any Visco fan system. The Volvo set up is superb.
Thnx for the video n info.. It rlly help as am A kind of blurr upon wiring&co... U do me a bit understand(hope it'll be more&more as ur explaination directly,.. ..clean&clea+ short&sharp. Be blessed always wll U& ALL whomever surround/arround'...juz gohead doin' waddever infomative/tutorial_shoot...coz it rlly3 help... Again TQ.
Great video! One thing that was missed... the main 12v hot wire running to the relay pack, should run through a ignition switch. If the ignition is in the off position the fan can’t run. If you wire it the way you explained, you turn off your ignition switch the fans would still run until the engine coolant temp or your AC pressure switch reach the desired “off” set point, which would be bad for the battery and alternator.
True, but this is how the OEM wiring is setup by GM ad well. The PCM will keep the fans on for about two minutes after the car is off if the engine is above operating temperature.
Any ideas for wiring up the big Ford fans? Heard they can spike to 60 amps on startup and run 40 amps pretty constant on high. Volvo relay rated to 30ish. Maybe another starter seliniod or high amp relay? Best video on using those Volvo relays very thorough thank you.
@@silverado82454 how many amps does your aftermarket fan run on? Thinking a continuous selinoid would be a good idea on high wired from vovlo relay. Only $25 and handles 85 amps.
Thanks for the great video. My only concern is what if the high speed is engaged (via temp sender) while ac is running. You’d end up with both switches grounded
Yes,it has happened to me but no issue, I've also done it on purpose and nothing happened the High speed sort of takes over I guess (not sure, not really an electrical guy).
I used a high pressure switch on my c10 #25555657 from a older gm car, it fits on the high side port of my truck . switch is open until the pressure teaches 210 i think then it turns the fan on and goes off about 175 psi that way the fan is not running all the time. Hope this helps you.
I have installed a 3 way switch inside the truck to control the fan manually either high or low ,I've had issues with the temp switch leaving the fan running after cool down, hope this helps you.
I've done it with volvo relays on ,to me is the easiest way. The wireing is been done for you and the relays are very durable, if it goes bad you can get it in any part's store. Hope this helps.
Thank you for your help man and I feel kind a embarrassed to ask you again.. to hook up your air conditioning ? Did you use Different relay or The Volvo relay can do it all.. Thanks again 😬
@@danielviorato1333 The relay does it all,you just have to run a wire from the switch to the fan relay, either hi or low speed wich ever works best with your truck.
@@silverado82454 i found the exact relay you have as a spare in this video. I am running dual fans & i know i will run a temp sensor on the radiator return hose, but i’m not sure where to run the 2nd temp sensor line.. the engine is a 305 small block chevy with tbi from factory.
You need a factory high pressure switch from a early to mid 80’s front wheel drive GM car and put it on the high side port on your ac system, the switch has to be 2 pin and normally open wish means it would activate the fans when it reaches above 200 on the high side, is going to depend on the switch you get,they all have different pressure settings
One problem: The wiring connections NEVER just twist the wires together while installing. While soldering wires is preferable, you can also use butt connectors, electrical tape, and heat-shrink to connect up the various parts of the circuit wiring.
Does anyone know where I can find a video where they show an electric fan conversion for a 2005 H2 Hummer? This is too complicated for me. I would need to see a video of how it is done on a Hummer H2 only then will I know.
We sell higher wattage electric fans at www.americanvolt.com/collections/electric-fans which includes radiator mounting kits. Various thermostat switch turn-on temps and NPT thread-in sizes available as well.
