For whom it may concern, I want to share my experiences with DEFA electrical engine heater. Built in by myself, in 2.0 i-VTEC 2011. Pictures above show front of car, with connector in lower grille. Resistor is mounted right hand side of the catalytic convertor, where the drainplug for engine coolant is situated. In my previous cars, I painted the little plate behind the grille black. I made this plate myself. Manual of DEFA says to drill a hole in the bumper. Don't like that. Took me 3 hours to mount it. What is it? How does it work? A 220 volt, 550 Watt resistor that comes into the drain hole for the coolant in the engine block. A small connector is mounted on the front grille. With the special DEFA-cable (with the small connector), you can connect to the grid. Once connected, the coolant (engine block) is warmed up between 30 and 40°C above ambient temperature in approx. 1,5 to 2 hours time. There is no relation or connection with the car's electrical/electronic wiring. +30°C is worst case scenario: parked outside with wind. In the garage you get easily a 40°C rise above starting temp. Even a bit higher if you let it connected for the full 2 hours. I use a timer to get it started in the morning before leaving to work. What's the advantage? Why mount this in Belgium? I fully admit: you do not 'need' this in Belgium, but it has some remarkable advantages when your car is parked outside: 1) safety: when freezing, defogging and melting the thin layer of ICE is piece of cake! You can drive off immediately. 2) comfort/safety: after littarly 500 meters, the heating blows warm air and coolant reaches 50°C while outside it's around 0°C. 3) engine wear: is a real minimum, don't need to explain the difference between a warm and cold start? 4) fuel consumption: the amount you pay for electricity is by far cheaper than what you safe by driving off with a pre heated engine 5) environment: no rich fuel mixture needed in combination with the cold catalytic converter. The advantages are higher the colder your climate, the shorter your drivecycles and when always parked outside. I had such a DEFA also mounted in my Civic 1.4 I-DSI and it's also mounted in my wife's 1.4 I-DSI. In other words: I'm getting experienced with mounting this stuff and usage. In case you would wonder how I know the temperatures of the coolant: I know them in detail because I have a bluetooth OBD connector + Torque OBD app on smartphone. I know what my engine is doing. In Scandinavian countries such heaters are very common and normal. Don't hesitate to ask questions in case you have.