Eddo Rogue
Well-Known Member
- Joined
- May 18, 2020
- Messages
- 3,978
- Reaction score
- 2,497
- Points
- 113
- Location
- Burbank,CA
- Vehicle Year
- 1993
- Make / Model
- Ranger 4x4
- Engine Type
- 4.0 V6
- Engine Size
- OHV
- Transmission
- Manual
- 2WD / 4WD
- 4WD
- Total Lift
- skyjacker front leveling kit
- Tire Size
- 31-10.50R15
- My credo
- Crossed threads are tight threads.
That's pretty much what I had drawn out in my head, thanks for the clarification....I was asking kind of a brush up when I got to wire my lights as well (its been awhile since my last wire up).No difference IF the toggle switch is rated for the same AMPs at 12volts
But one other benefit of a relay is that the larger wires needed to supply 40amps, at 12volts, can be shorter, and you only need the 3 larger wires
Ground, from battery to fan motor
12V positive from battery to relay
Relay to fan motor
The relay on/off control wires can be much smaller, only need to pass .5 amp
In most cars/trucks relays are control by Grounding
This is because its easier, cheaper, and safer
The relays will have to have 12v to supply power to the device they control
You then just need to jump that 12v to pin 86 on the relay
So now when you Ground pin 85 the relay will activate
So you just need 1 smaller wire to a switch in the cab, the switch can be grounded IN the cab, so just 1 wire is needed thru firewall to the relay, easier and cheaper
The safer part is because of the possibility of a wire shorting, the longest wire has the most potential to short, and its a GROUND wire, if it shorts all that happens is that the relay and its device actives..............no blown fuse, no melted wires, so safer
The controller is so you can activate the Fan Relay
They used a standard automotive relay on the controller because its cheaper and easier to replace than a circuit board activated relay
But the "controller" can be made as all one circuit board, and still have the AC IN and Light Out, with a mini-relay on the circuit board
As said above the Temp Sensor can't switch Fan Relay on/off, it doesn't have that electrical circuit, its just variable OHM/resistance device
You still need a circuit that "reads" OHMS and can be setup to toggle on/off at specific OHMs
I think you can buy temp sensors that have preset on/off, but they would be screw in type and as said preset temps not adjustable
Like the oil pressure switch that Rangers use, but for temp instead of pressure
Ok so based on what you and Dirtman and PJ are telling me, I will need an 80 amp or higher relay, but only one.
Yep I'm doing exactly that, eliminating the controller and running a preset sensor. I ordered a few temp ranges and some hose adapters. They will be here Thursday....
Quick question, do I want a single prong or 2 prong sensor? or doesnt matter? Ive seen both....I think one wire sensor will suffice if Im running a relay right?