If you installed brake ducts in your E46 M3 track car, chances are you also removed the windshield washer reservoir (aka, “windshield cleaning container” part number 61 67 7 895 571). The container wraps around the AC dryer and sits in the path of the Hardmotorsport bumper duct inlet. If you no longer drive your car on the street, this probably makes sense. After all, a track build is all about adding lightness and removing complexity. If you still drive it on the street, it can also be about bugs. Lots of bugs. Bugs smeared on your windshield. Since I still drive this car on the street, I decided I wanted to find a way to retrofit a smaller container in the smuggler’s hold.
The compartment already has mounting points you can attach to. All you need to do is fabricate a bracket and get a small container. I got this 2 quart one from US Plastic.
Once you locate the container, then all you need is power, ground, and the hose to the spray nozzles. (I just hooked up the windshield nozzles, not the headlight washers.) Ground is easy as there are multiple grounding points close-by. For power, I ran a wire along the existing wiring harness and picked up the positive connection in the wiring loom that I disconnected from the factory container. To get to the hose, I just had to measure the run I needed, then unwrap it from the wiring harness and cut to length. All in, it’s a very clean install.