Does anyone know where the connector(s) for the outside temp display
plug in at? I saw a picture of the display and it showed to wire
harnesses coming out of it with connectors at the end. My temp display
doesn't work at all (the screen is blank) and I'm wondering if someone
just unplugged it.
I looked under the dash to try and find where it plugged in but I
couldn't locate anything in the maze of wires under there.
I also pulled the dash out as far as I could with the spedo cable
connected and didn't see anything there either.
Any help would be appreciated.
Agree with what Karl says. If the display is intact, not broken LCD,
the sensor (behind front license plate) is usually the culprit. The LCD
shows blank when the sensor goes out of range (resistance too high or
I replaced the sensor on my 84 190D, not going under the fusebox (too
much trouble). I just cut the wire near the left fender...
If the LCD display does break, go find a used one (either junkyard or
eBay). A new one from dealer is probably more than $200.
Ok, thanks guys. So in order to replace the sensor you have to either
replace it all the way back to the fuse box where it plugs in, or cut
and splice a new sensor in? Does cutting it affect the accuracy too
much? Is it just a single wire?
Wan-ning Tan wrote:
The sensor is quite sensitive so a good, clean connection is necessary.
I used solder. There are two wires.
The LCD display is backlit. If there is no light, you need to check the
assembly. It just sits inside the cluster housing but is a completely
separate unit and it is lighted by itself, not by the light from
cluster. The wires (contains 5 wires, 2 from sensor, +, ground and
light) are directly behind the unit so trace from its back. The wires
are about 12" long, shape like "Y".
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