I have been running this for a week or so and have not had any problems
or surprises. It works well and can be switched on or off.
I'm not good at explaining things but will try my best. If you have questions
just ask.
Step 1: Get an on/off switch. I used a rear interior light switch from an
85 SEL. Find a location for it and hook 2 wires to it to get the on/off function.
This is where I put mine.
Connect ign power to one wire (I spliced into the lighter socket blk/yel wire) and run
the other wire over to the "Moving off 1st gear" relay N23.
See photo
The black box in the center of this picture.
Step 2: Remove some of the outer covering from the harness at the N23 relay.
Splice the second wire from the switch to the WHITE wire at the N23 relay.
You only need pul the connector off the N23 relay and pull the plug down where you can get to it.
Step 3: Reconnect any plugs or wires that were disconnected. Road test in both
the on and off position. If everything works, reassemble and enjoy.
This unit (N23) could be removed from one of the above cars and added to any car
that has the kick-down solenoid on the transmission and doesn't have first gear
start already, for instance the 86 to 91 S-class. This will require a lot more wiring
but there are only 4 wires involved and shouldn't be too difficult for all the smart
people on this board.
This is a picture of the entire system that was removed from an 85 500SEL.
The 4 wires are:
Brown - ground
White - ign power from the added switch
Green - wire to the black wire at the kick down switch or the B switch in the shifter
Green/yellow - to speed signal from the speedometer. It can be found at the
speedometer or at the cruise module. The wire at the speedometer or cruise
controller is green/brown.
If anyone has any questions or needs more information, let me know and I will
try my best to help.
Paul