Identifying instrument cable.
I have a 66 230SL that I restored back in 1975. Removed the dash components and refinished the wood. Rebuilt engine, repainted the car and installed new leather upholstery. (I was only 38 then) After 38 years, it needs attention again. Speedometer was getting noisy so I decided to lubricate the cable. Unfortunately, I don't remember what I did back in 1975. After removing the glove box and radio, I found I still couldn't remove the speedometer. So I joined the Pagoda SL Group and found my way to the back of the speedometer through the Tach access. Speedometer is now quiet and I am starting to put things back together. Problem is I have a loose cable that I can't identify. It is a brown, two wire, insulated electrical cable that runs from the upper left heater/fan lever (blue symbol). It is about 3 feet long and terminates in a 2-pin male connector. My guess is that it connects to a rheostat in the lever and probably connects to the fan motor. It may have been left disconnected in 1975. My problem is where does it go and how do I reconnect it. Appreciate any advice.
Interesting background on why I restored a 9 year old 230SL. I am third owner. First owner blew a head gasket and locked up engine. Dealer replaced head gasket and knocked engine loose. Second owner and I drove car for nearly 7 years on four of six cylinders (two cylinders had virtually no compression - and no rings). Car was a little slow on acceleration, but would still red-line. The worst piston is now resting on my desk.
