Such a rare find this was! An old 1950’s Taxi meter made by Ohmer. This one was serviced by the company and was just sitting on a shelf waiting to be installed again, and never was.
Here is a video explaining what I knew of it at the time before I did the light restoration.
Here are the before pictures, how I found it.
It was in rough shape but not bad for its age. ( It is as old as my old 51 truck! )
First step was to get the clock mech working good again, and cleaning up the operation.
I pulled the wind up clock section out, and cleaned up and oiled all the moving parts, it now runs snappy and true!
Next the numbers needed some major cleaning, old oil and grease had collected on the digits, so had to scrape them out each by hand, than re paint them and re black the dials. It took the better part of a weekend and over 72 Q-tips to clean the 250 digits!
Now to get the old tapered pin out, so I can get all the parts into paint! Getting the old pin out was a pain, had to use a drift, and a clamp to push it out without deforming it.
With every part removed, I was able to get it all into the sand blaster for cleaning. The plastic was cleaned by hand, it even has old style plex light pipes inside to direct the light to the digit readouts!
Here are the finished shots, with a new paint job! Gloss victory read for the flag, and Hammer finish black for the main body. This felt true to the original looks I was able to find online.
Here is a final walkthrough of the finished meter, and as I learned more about it.
Next steps? I will need to build or a find a 6V 2.5Amp DC power supply to run the lamps, and may install a synchronous motor inside to run the ‘driveline’ mech so it will display miles traveled when the switch on the front is hit. Stay tuned!
Ref my previous comment, here are some pictures, https://studio808.smugmug.com/Misc/Taxi-Meter/n-Kn45fx
These pictures are very helpful! Yours is setup a bit different than mine! From what I can see, my best guess:
YELLOW: Always on +12V
RED: +12V out to Taxi light on top of car. ( Off when meter in use )
BLACK: Auxiliary +12V that is only one when the meter is running. ( Dash mounted Fair light maybe? )
CHASSIS: Ground
Light switch, this will bypass the flag switch and keep the lights on even if the cab is not in ‘fair’ mode.
I hope this helps, please let me know if you have any other questions!
Also noticed yours has a powered ‘clock’ where mine was a wind up, the Fused Black wire, may go to the clock motor to run the fair timer!