How to do electric two way switch wireing - Electric Electrical Supplies

Any store like Home Depot has standard electrical wire. If it was made in the 50s the cores will be covered in rubber which will be well and truly perished by now. The switch should be okay, but generic on/off switches can also be purchased there.

Switches
https://www.google.com/search?q=electric+fire+replacement+switch&rlz=1C1QJDB_enCA643CA644&sxsrf=AOaemvJQXPyEa570tCrGaxha3agC28NrJQ:1634221143265&source=lnms&tbm=isch&sa=X&ved=2ahUKEwiu2umVjMrzAhXEW80KHQa2AAsQ_AUoAnoECAEQBA&biw=1920&bih=937&dpr=1

Wiring
Electric heaters are sized by wattage. See "Sizing Your Heater, below" to determine the right one for your space. For a heater up to 2,880 watts, run a cable with two 14-gauge wires and one ground wire (called 14-2 with ground); run 12-2 cable with ground to handle up to 3,840 watts.

How to Install Electric Heaters (DIY) ' Family Handyman

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Do you mean light switches?
https://www.familyhandyman.com/electrical/wiring-switches/how-to-wire-a-threeway-switch/

http://www.electrical101.com/3way-switch-wiring-using-nm-cable.html

If you mean something other than house lighting switch, please Comment with more details

At a home improvement store I purchased a book on electrical wiring. It had diagrams and the info you need. Don't try and do wiring unless you can read and follow directions from a manual, or get hands on help from someone that is experienced in electrical circuits. Conversational directions are not sufficient, unless you are a very capable do it yourselfer.

GENERAL INFO ERROR CODES PROBLEM PARTS SOLUTION E1 NOT ENOUGH WATER INLET VALVE CLEAN OR REPLACE E2 NOT DRAINING DRAIN PUMP KINKED HOSE--ADJUST HOSE TOO HIGH--ADJUST PUMP FAULTY--REPLACE E3 WATER TEMP TOO COOL THERMOSTAT STAT OPEN--REPLACE TIMER CONTACTS OPEN-- REPLACE HEATER OPEN--- REPLACE ABOVE FAULTS CAN ALSO CAUSE TIMER TO STALL(TIMER STOPS TO ALLOW HEATING OF WATER) TIMER WOULD STALL AT THE 2,5,7 AND 10 O'CLOCK POSITION E4 OVERFLOW SWITCH ACTIVATED CHECK FLOAT IS FREE CHECK LEVEL OF D/W SOAP- AMOUNT AND KIND WASHARM STUCK OR SPLIT E5 E6 & E7 TEMP SENSOR THERMOSTAT REPLACE ERROR CODES: DDW497W Problem Solution Error 1 Water supply is turned off Turn water supply on Detached / damaged pipe Replace / readjust pipe Low water pressure Requires min. 0.04Mpa water pressure Defective water fill valve Replace water fill valve Damaged or defective wiring Repair the wiring Defective pressure switch Replace pressure switch Heavy water usage elsewhere in home Use unit when water usage is at a minimum Defective electric control Replace electric control Error 2 Sump or filter is obstructed Clear the sump and filter Damaged/defective drain pump Repair or replace drain pump Drain hose is obstructed or detached Clear out/readjust drain hose/tighten clamps Defective pressure switch Replace pressure switch Damaged or defective wiring Repair the wiring Defective electric control Replace the electric control Error 3 Voltage is too low Minimum voltage of 198 V Damaged/ defective thermostat Replace the thermostat Damaged or defective wiring Repair the wiring NTC thermistor damaged/out of position Replace or readjust the thermistor Damaged/ defective heating element Replace the heating element Defective electric control Replace the electric control Error 4 Sump or filter is obstructed Clear the sump and filter Loose or damaged sump pump/drain pump Repair or replace sump pump/drain pump Drain hose is obstructed or detached Clear out/readjust drain hose/tighten clamps Defective pressure switch Replace pressure switch Loose heater element Tighten heater element mounting nuts Loose spray arm Tighten spray arm Damaged or defective wiring Repair the wiring Defective electric control Replace the electric control Defective Microswitch Replace microswitch Float- defective or not in the right position Reajust / replace float Error 5 Damaged/ defective power switch Replace power switch Damaged or defective wiring Repair the wiring Defective electric control Replace the electric control Error 6 NTC thermistor damaged/out of position Replace or readjust the thermistor Temperature is too low Temperature should be above -20? Damaged or defective wiring Repair the wiring Defective electric control Replace the electric control Error 7 NTC thermistor damaged/out of position Replace or readjust the thermistor Temperature is too high Temperature should be below 120? Damaged or defective wiring Repair the wiring Defective electric control Replace the electric contr

Wire that is between your power source and the pump, needs to be broken/spliced in, with a switch.

If this is a 240 wired motor/pump then Both "hot" wires need to be broken by the switch. If 120, then it is possible to just break the one hot wire. That will be the (Normally) black wire. But be very careful in this as Electricity is "Color Blind"! It does not care what the wire color is. Checking with a meter is always wise & when working with electricity wires, ensure power breaker shut off switches are in the "Off" position.

I posted the two different types of switches you can get at a hardware store.

Open following link for single-pole and 3-way installations:
http://waterheatertimer.org/How-to-wire-GE-15312-timer.html

If you have two hot wires inside the same box, that is unusual unless the power source is 240volt.
However it is possible that box has two hot wires and each controls a different light.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

If I understand your assessment then yes. One wire (black/hot) is interrupted by the switch, and the other (white/neutral) normally passes the switch un-cut. FYI - any chance you get to ground a device should be seized; as this will help reduce shock risks associated with direct faults (wires touching stuff they shouldn't).

If it worked before, it should be a wire to wire replacement. You are replacing a regular switch/outlet with another switch/outlet which just happens to be a GFI outlet.
Wire the old switch wires to the new switch and the old outlet wires to the new outlet.
Cut the breaker/s off first !!

I answer questions for free.
I know electric wiring.
However I might not understand your problem.
If I do not understand your problem, add a comment with more information and I will respond.

If I understand correctly you want to add a new switch and a new light in your garage.
And you are starting from scratch with no knowledge.
You are starting with a blank wall.

I do not know what a consummer unit is.
Is that a type of light?

Here's a sketch of the project:
We need an electrical receptacle or wall-plug so we can get electricity.
We need to run a cable from the electrical wall-plug to the switch.
This will bring electricity to your switch.
And then we need to run a cable to the light.

Let's talk about how you get electricity from the wall-plug.
The wall plug has a black and white wire connected to each side.
Your cable has a black and white wire.
You connect your black wire with the black side.
Connect white to the white side.

Now run the cable to your switch.
The cable arrives at the switch.
The cable has a black and white wire.
The switch is wired differently than the wall-plug.
On the switch you connect one black wire.
But the white is not connected to switch.

Now we're ready for the cable going to the light.
The cable to the light has a black and white wire.
Connect the black to the switch.
So now you have 2 black wires connected to the switch.
The black wires are on different screws.
And then connect the two white wires together.

So the switch is wired.
Run the cable to your light.
The cable arrives at the light.
The cable still has a black and a white wire.
Your light will have wires -or- it will have screws.

If light has black and white wires, then connect black to black and white to white.

If your switch has screws, then connect black to brass-screw and white to silver-screw.

If I understand correctly, you are replacing a switch that has a black and red wire?
And your new switch has 2 black wires + green wire

The green is color-code for ground, and it always connects to bare ground wire.
The switch wires are not color-coded (both are black) so they can connect to either of the two wires that came off old switch.
If switch does not operate, they try reversing the two black wires.

As a general rule, the wires inside your box are color-coded.
The color-code information says:
The black is the Hot from breaker box. This wire carries electricity from the breaker to the switch.
The red wire goes to Load (fan, light, motor). This wire carries electricity to the Load when you turn ON the switch.