RE Wiring for ignition switch the below is for 190 merc (w201 model) hope this is of use to you CIRCUIT 30 = RED 2 CONNECTIONS CIRCUIT 50 = PURPLE CUICUIT 15 = RED/BLACK CIRCUIT 15R = RED/GREEN CIRCUIT P30 = GREEN/WHITE (SMALL WIRE) CIRCUIT 15X = RED/YELLOW CITCUIT 15T = BLACK/BLUE
Ignition switch.
Ouch! this could be a problem. I would start by looking for a Bentleys guide. You may need to contact Mercedes directly or a repair shop for a wiring diagram.
first you pull the plastic rod then turn on the ignition
Minus - connects to the distributor and Positive + connects to the ignition.
For a 1972 Datsun pickup truck, the ignition coil is typically connected to the ignition switch and the resistor. The resistor is used to reduce the voltage supplied to the coil, ensuring optimal performance and preventing overheating. Generally, the primary wire from the ignition switch connects to one terminal of the resistor, while the other terminal connects to the positive side of the ignition coil. The negative terminal of the coil connects to the distributor or ignition points for spark generation.
Looking at the plug from the blade side directly on you should see a larger blade (silver) on the right, smaller (brass) blade on the left and a U shaped ground blade on the bottom. The white wire connects under the right (silver) coloured screw, the black wire connects under the left (brass) coloured screw and the green wire under the green ground screw. If it is only two wire lamp cord the wire with the raised rib on it is the identified neutral wire and it connects to the silver screw. The other connects to the brass coloured screw.
There are two visual differences between the "hot" and neutral side of a duplex receptacle. Looking at the face of the receptacle the blade sizes are different. The smaller blade is the "hot" side where as the larger blade size is the neutral.On the reverse termination points, the "hot" wire connects to the brass coloured screw and the neural wire connects to the silver coloured screw.The U shaped opening is for the ground blade and the reverse side, the green coloured screw is where the ground wire of the circuit connects.
In normal home wiring the black and white supply the circuit voltage. The green conductor connects to the green screw. The black conductor connects to the brass coloured screw and the white conductor connects to the silver coloured screw. There are additional terminals on the receptacle that connect to the down stream side of the circuit. By making these connections on the GFI receptacle all downstream normal duplex receptacles are also protected.
When turned to the "Off" position, it connects the ignition to the frame ground to turn off the ignition and therefore the spark (fire.)
It's called a hyperlink or link
An external resistor connects to an ignition coil by being wired in series with the coil's primary winding. This resistor limits the current flowing to the coil, helping to prevent overheating and ensuring proper voltage levels for the ignition system. Typically, it is connected to the positive terminal of the coil and the ignition switch, while the other terminal of the coil connects to ground. This setup is common in older ignition systems to manage the power output effectively.
Disconnect one cable of your battery and turn the car key to ignition position two times, connects your battery and turn the car key to ignition.