1) Choose the location on your radiator hose where you want to install the adapter. Hold the adapter up against the hose to make sure you will have enough room for it and for the sensor you plan to use.
The adapter should be mounted in a straight section of the hose; this straight section should be at least 100 mm (4 inches) long.
2) Mark the location on your radiator hose where you wish to install the adapter. Keep in mind that inserting the adapter into your radiator hose will make it 25 mm (1 inch ) longer. If you would like to keep your radiator hose at its original length, the best method is to choose the location where you want the sensor to be, then make marks 12.7 mm (1/2”) to either side of that location. When you cut the hose, you will actually make two cuts, one on each mark you made earlier. This will cut a 25.4 mm (1 inch) section out of your radiator hose, so when the adapter is installed, the hose will remain at its original length.
3) Make your cut(s) in the radiator hose. If you have enough clearance, you do not need to remove the radiator hose from the vehicle first, but be aware that if you do not, when you cut into it you will probably spill some coolant.
As such, do not try this when the engine is warm, and please be sure to clean up any spilled coolant immediately – the sweet smell can attract wild animals, house pets, children, etc. and is lethal if swallowed.
4) Insert your sensor into the adapter. Note: The threads on the adapter are tapered to ensure a good seal. As such,the sensor will probably not screw all the way down into the adapter – this is normal. Just screw it in until it is tight;
If you attempt to screw it all the way in, you will damage the adapter and/or the sensor. You may use thread sealant if you wish, but be aware that if your sensor obtains its ground through the body of the sensor, the sealant may prevent
the sensor from grounding. If the sensor you are installing does not provide its own ground, you will need to provide a ground to it. (See the “Grounding the Sensor” section below.)
5) Slip a hose clamp over both sections of the radiator hose you just cut, insert the adapter, position the hose clamps and tighten them down
6) Make the electrical connection to your sensor. If you are relocating the original sensor that came with the vehicle to the radiator hose, it may be necessary to lengthen the existing wirer/connector by splicing in a section of wire (not included) in order for it to reach.