under dash wiring

[jimpagoda]

i m working on a 1965 pagoda 230sl ,i need to know where to connect the 2 brass ground wires for the tachometer and speedo ,any photos for under dash will be appreciated
regards

[Duncan200]

They attach to the back of the speedo and tacho housings.

[WRe]

Hi,
Usually the ground wires for speedo and tacho are attached to the knurling nut when mounting the U-bracket. To simplify instrument installation, some people have drilled a threaded hole into the U-bracket to firmly mount the cable there.
The ground attachment at the body takes place on the left dashboard stiffener as far as I remember.
Here you can find some photos: https://www.sl113.org/forums/index.php?topic=27283.msg195756#msg195756.
...WRe

[acbrock]

Oh boy. To add to my worries.  I did not have a ground on my Speedo.  Just the tach.  Back into the dash I go.

[Leester]

"Oh boy. To add to my worries.  I did not have a ground on my Speedo.  Just the tach.  Back into the dash I go."

It just means your Speedo lights wont come on.

[dirkbalter]

i m working on a 1965 pagoda 230sl ,i need to know where to connect the 2 brass ground wires for the tachometer and speedo ,any photos for under dash will be appreciated
regards

[66andBlue]

Hi,
Usually the ground wires for speedo and tacho are attached to the knurling nut when mounting the U-bracket. To simplify instrument installation, some people have drilled a threaded hole into the U-bracket to firmly mount the cable there.
The ground attachment at the body takes place on the left dashboard stiffener as far as I remember.
Here you can find some photos: https://www.sl113.org/forums/index.php?topic=27283.msg195756#msg195756.
...WRe

To avoid trying to keep the ground wires on the threaded stem while fiddling to screw on the nut I have extended the ground wires and attached them permanently at the bottom of the threaded stem.
This also allows me to pull out the tachometer (and speedometer) and let it hang down during the removal process.
 

[Jonny B]

jimpagoda - I would highly recommend you take the plunge and sign up for full membership. It will be the best $30 you will spend on your car. It gives you full access to the tech manual, two Pagoda World magazines per year, and four issues of our newsletter, Pagoda Notes.

[jimpagoda]

Thank you