Pagoda SL Group

W113 Pagoda SL Group => Electrical and Instruments => Topic started by: Ziggy on October 06, 2009, 18:46:31

Title: bi metallic strip at instrument cluster
Post by: Ziggy on October 06, 2009, 18:46:31

I am replacing the back of the central instrument cluster. The replacement has the lights on the right side wired to some kind of bi metallic strip.  ???
What is this for?

Title: Re: bi metallic strip at instrument cluster
Post by: Ziggy on October 08, 2009, 22:18:34

A few pictures to clarify

1: On the right the old cluster with the back plate off, on the left the replacement. Note the 4 pins on the right side, these connect to the bi metallic strip on the back plate. The old cluster does not have the bi metallic strip.

2: Sorry for the poor quality. On top is the bi metallic spring, and below you can just make out the 4 copper plates which connect to the 4 pins on the above picture.

3: The outside of the backplate. It is clearly original

It appears that the bi metallic strip controls the fuel gauge and empty tank light, which do not work now. Why are they connected with the bi metallic strip?