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DRZ400 Water Temperature Sensor Install
The DRZ400E doesn't have a water temperature sensor installed from factory and while the left radiator does have a threaded bleeder hole that can be used to screw in a temperature sensor, there are two reasons I prefer not to use this location. Firstly the cable on the temperature sensor makes it a hassle when you want to bleed the radiator system of air. Secondly the DRZ400 can get small air pockets in the left-hand radiator resulting in the temperature sender giving incorrect readings.
Using a 19mm inline temperature sensor unit is a far more reliable and accurate way of monitoring water temperatures and allows you to still use the left radiator air bleeder.
In this build I am installing a Trail Tech 19mm inline temperature sender unit.
The orange arrow shows where the tank bolt is mounted. It is a fiddly enough job fitting the bolt on a Safari 28 litre tank through the small cavity let alone having to contend with a temperature sensor in the way. For this reason I mount the temperature sensor unit further in towards the engine where the green arrow is pointing.
The radiator hose removed and marked for cutting and removing the section of hose the width of the temperature sensor unit.
Temperature sensor unit fitted.
Temperature sensor unit secured with stainless steel hose clamps.
Radiator hose refitted to the bike with the temperature sensor unit in place.
This is the Trail Tech TTO surface mount temperature display that is used. This is covered in detail in the DRZ400 build article.