[ront49]

My BDR came with a heater ... it's behind a "box" in the engine compartment so there's not much to see other than a couple of hoses running into the heater box/chamber. In the cockpit there is only one flex hose about 2 1/2" in diameter that has two vents. One one the passenger side and one on the driver's side. Neither of the vents are visible unless you have your head under the dash. The matching two speed heater switch is located in the dash with all the other switches. My switches are not marked. To address your question concerning effectiveness of the heater, I wear a vest and coat in cold weather. The heater does a great job of keeping my feet and legs warm. I generally don't drive my Cobra if it's below 50 degrees and that's cold for me.