Installation Guide
Thank you for purchasing a hot n clean Heated Windshield Washer Fluid Kit, before starting your installation be sure to read and familiarize yourself with all of the components and their operation.
We hope that you are as excited about using our product as we are making it for you.
If you have any questions or need tech support, contact us at HotnCleanWW@gmail.com, we are happy to help
Adds 5 Liters of heated washer fluid to your existing system at the push of a switch!
This Kit Contains
- 1 hot n clean Reservoir with Heat Exchanger & Universal Multi Position Brackets
- 2 “Y” Fittings
- 1 High Volume Pump
- 10’ – ¼” Nylon Line
- 1 Control Switch with 10’ of wire
- 1 Twin Check Valve
- 1 Hardware Kit
- 1 QR Code Decal - direct link to complete instructions
- 1 Temperature Controller
- Control Valve
- 2 Barbed Fittings
- 2 Mounting Clamps with Hardware
5/8” Heater Hose and 8 Clamps – Not Included
Quick Connectors are provided for convenience. We recommend soldering with shrink tube, if possible
Reservoir Mounting
Determine a solid level, suitable location for mounting the hot n clean Reservoir – keeping in mind easy access for mounting of the tank and washer pump, filling, and connections to the vehicle’s heater hose lines. The mounting brackets and hardware provided are multi- directional, simply slide off and reposition if needed for your installation. Be careful when drilling the 2 -1/4inch mounting holes, 3 1/2 inches apart, not to hit anything else behind
“Y” Fitting Connections
Next, is to determine the best location to install the two "Y" fittings supplied, that connect the vehicles heater hose lines to the hot n clean Reservoir. Keep in mind the ease of routing and supporting them along the way. (See Diagram A)

(Diagram A)
Heater Hose Length
At this time determine (by using a tape measure), the distance between the “Y” fitting connections and the hot n clean Reservoir, this is how much 5/8 heater hose line is needed to purchase from your local auto parts supplier along with the eight hose clamps required.
Once you have acquired the necessary hose and clamps, and are ready to start the installation.
Make sure the cooling system is cold!
Never work on a hot system!
Installing the “Y” Fittings
Drain the cold vehicles cooling system into a container for recovery. Install the two “Y” fittings and hose clamps one at a time by cutting the factory heater hose line with an appropriate hose cutter.
( 3/4” - 5/8” barb )
The fittings are designed to except a 5/8 or 3/4-inch hose line,
The fittings are designed to except a 5/8 or 3/4-inch hose line, if yours is the larger simply push the fitting in deeper to the next larger barb.
Put the hose clamp at the appropriate spot and tighten as necessary.
Connect the heater hose lines from the “Y” fittings to the hot n clean Reservoir and secure with hose clamps as necessary. Coolant flow in the hot n clean Exchanger is Bidirectional. Refill cooling system. At this time use a pressure tester to check for leaks.
DO NOT LET THE HOSE “HANG“ FROM THE “Y” FITTING!
Make sure to support them well. Also be sure to install both fittings, pointing in the same direction
Mounting the Pump
Choose a mounting location that is as close as possible to the hot n clean Reservoir. Keeping in mind the of ease of connecting and routing the red nylon line supplied. Avoid tight bends and kinks.
Drill two 1/8" holes – 1 7/8 of an inch apart and mount the washer pump with the screws provided. At this time drill a 1/8 hole to attach a ground wire for the washer pump to the vehicles body ground. Cut ground wire provided on the washer pump to desired length, install ring terminal, and fasten with screw provided (See Diagram B)
(Diagram B)
Connect flexible rubber line from the hot n clean Reservoir output to the washer pump inlet. Keep the output fitting level. (See Diagram C)
(Diagram C)
Connect red nylon line provided to the washer pump outlet and route towards the point of intersection where the factory washer pumps line has a rubber section, (usually at the vehicles cowl), where you will install the twin check valve that connects the two systems together, support with nylon ties provided. (See Diagram D & E)
(Diagram D)
(Diagram E)
When installing the twin check valve be sure to mount it higher than both the hot n clean and the factory Washer Fluid Reservoirs to avoid siphoning, make the necessary connections
Selector switch wiring
Supplied in the kit, is a 3-position selector switch with 10 feet of wire. (See Diagram F)
(Diagram F)
Choose a suitable location with easy driver access where you can (using a step drill), make a 20 mm hole to mount the push in switch. (See diagram G, H, I)
(Diagram G)
(Diagram H)
(Diagram I)
Locating the factory washer pump power wire
Next run the 3-wire harness through a grommet in the firewall, and onto where are you can access the wire that sends a 12 V signal to the factory washer pump when activated. This will usually be close to the factory washer pump
If a wiring diagram to identify the washer pump signal wire, is not available, another way to determine which color wire, it is simply to disconnect the factory washer pump at its connection and install a 12 volt test light into the connector, (see Diagram J & K)
(Diagram J)
(Diagram K)
Check for power when factory washer pump is acivated (see diagram L)
(Diagram L)
Connections
Before trimming excess wire peel away red hot n clean wire as to have enough to run to the hot n clean washer pump (See Diagram M)
(Diagram M)
Trim off the excess blue wires and connect the factory signal wire to the dark blue and then connect the light blue to the line going to the factory washer pump. (See Diagram N,O & P)
(Diagram N)
(Diagram O)
(Diagram P)
Next, run the red wire to the hot n clean Washer Pump
Trim excess and connect with female spade terminal provided. (See Diagram N)
Be sure to connect to the positive terminal on the pump to avoid reverse rotation. (See Diagram Q)
(Diagram Q)
Washer pump selection
With the switch in position 1, power will go to the factory washer pump as usual.
With the switch in position 2 the power will be redirected to the hot n clean washer pump. (See Diagram R)
(Diagram R)
Temperature Control Installation Guidelines
Mounting the Control Valve
-
The Flow Control Valve can be installed in either line between the “Y” fittings and the hot n clean Reservoir (see Diagram S)
(Diagram S)
· Either Port can be used as an Inlet/Outlet
Before mounting the flow control valve, install the two barbed fittings supplied, using a thread sealant. (see Diagram T)
(Diagram T)
Determine a suitable solid, vibration free mounting location, using the supplied mounting clamps. Mount with the electric motor on the top. (see Diagram U)
(Diagram U)
Do Not Mount to the Engine
- Make Hose Connections
Controller Operation
The controller operates on a 12 volt signal and uses a thermostat in the Hot n Clean Reservoir, which monitor's temperature of the washer fluid.
When powered with 1 volts. the controller will sense the temperature in the reservoir an if it iss lower than the preset "ON"temperature, it will send a 12 volt signal to the control valve, causing it to open and allow hot engine collant to flow through the Hot n Clean Exchanger, raising the temperature of the washer fluid. Heating will continue until the preset "OFF" temperature has been reached.
At this time the controller removes the 12 volt signal to the control valve, which closes and stops further heating. However, it is normal to see a few degrees of additional heating until the exchanger stabilizes. Heating will resume after the Hot n Clean Reservoir temperature has dropped to the preset "ON" temperature.
If the Red indicator lamp on the controller is on. heating is taking place and the control valve is open, when the light is off, the valve is close and there is no further heating.
Temperatures on the controllers are preset at the factory, to 30°C “ON” and 35° “OFF”, a conservative setting meant to avoid cycling the control valve unnecessarily. Adjusting the temperatures to suit your particular needs is easy to do, simply follow the instructions on the back of the controller (see Diagram V), or go to the website and see them there.
(Diagram V)
Mounting the Controller
The Temperature Probe is 3 meters long therefore, the controller can be mounted anywhere within the range of the hotnclean Reservoir, typically within a Drivers reach.
After Mounting the controller (with screw’s provided). Connect the black, Input wire to a good ground and the Red to a switched 12 Volt, 10 Amp - Fused power source.
Connect the Black and Yellow directly to the flow control valve. Control wires are not polarity sensitive.
Install temperature sensor in the Red Port on the reservoir, making sure the probe touches the bottom 0f the Red guide tube
You may have to remove the temperature probe tube to insure proper depth. Simply pull the tube up and out, Insert the probe until
the tip is exposed out of the bottom. Reinsert the tube back into the grommet until flush.
The Temperature Controller come’s preset to a maximum of 35 degrees Celsius for winter conditions. However, can be adjusted to maximum engine coolant temperature for summer use, by simply following the adjustment instructions on the back of the controller (see Diagram V).
Caution
Temperatures above 35 degrees Celsius can “Boil Off” the active
anti-freeze ingredient, in some winter blend washer fluids
Be sure to check your freezing point with a tester
For summer conditions, adjust the temperature controller presets to raise the fluid temperature for maximum cleaning power.
Fill Reservoir with Fresh Water & Test System
WARNING
The manufacture of the washer pump used in the hot n clean kit suggests only using their washer pump 3 to 5 seconds at a time and then be allowed to cool for 30 seconds.
Excessive running times can lead to the electrical motor being burnt.
They provide NO WARRANTY for burnt washer pump motors or washer pumps that have excessively been run dry. This pump design has proven to be reliable for over two decades under normal operating circumstances
Be sure to check the installation for leaks periodically after completion