I have been having some problems with my 116.120 since putting it back on the road after a number of years (6) in a climate controlled storage facility. The biggest problem I had when I put it back on the road was no turn signals, fog lamps or hazard flashers. Everything looked good, fuses, grounds and even the flashers, but something was very, very wrong.

After looking at every possible scenario, we discovered a mysterious flasher-like unit, next to the steering column, hidden behind the knee bolster. It has (3) round pins exiting the side of the black plastic case and it bears Bosch Part Number 0 335 200 007.

When I replaced this unit, everything started working. However, so far, not even MBZ can tell me what this unit is. Based on the number of diodes and resistors I found inside it, I would surmize that it is some type of voltage regulator.

They are easy to find at your local Pik-N-Pull Dismantler and can be had for $1.00.

Now, I only have a few more electrical demons to sort out...

One of them is crazy, intermittant tachometer fluctuation. Sometimes, the tach will just go wild, swing all the way to 6,000 and back to zero. Sometimes, it will just swing to 6,000 and stay there until I turn the key off.

It also 'bounces' when the turn signals are activated. All of the ground connections have been checked and the large ground grom the engine to the body is new.

Interestingly enough, when the tach starts its little dance, I can hear something in the passengers footwell make a clicking sound that is consistent with the needle movement.

I wonder if the transmission overload protection controller could have something to do with this???

I replaced the sending unit for the temperature indicator and it still reads just a shade above 100°F even after extended periods of driving. I find this odd since I went against my own teachings and installed a new Mahle 80°C Thermostat, which I verified is functioning.

The engine is hot to the touch, but apears to be operating within a normal range of temperature.

The fuel indicator will 'bounce' from time to time and will sometimes drop to absolute zero and stay there until the key is turned off.

I have new, replacement indicators that I can use for testing, but I think the problem lies elsewhere.

Anyone ever experience this malady before???

Your input would be greatly appreciated...Bert