Dear Sirs, I try to change Intermatic E1343 solid state timer to normal 2 ways switch. I saw the cable in 3 colors : black, red and blue. do ou know the menaing of each cables? if you can email me the manual of E1343, it would be great Best Regards, Steve

Description of wiring is unclear
Timer is not identified.
Different timers install different ways.
Not all timers are made to control a pump.

Here's what I know:
1) You are replacing single-pole switch.
2) You want to control pump with timer.
3) You posted question under ST01C timer, but ST01C has 1 blue wire so you don't have ST01C timer.

Here's what I need to know to help you:
1) What HP shows on pump nameplate?
2) What color wires are coming from pump, and how did each wire connect to single-pole switch?
3) What buttons are on timer so I can identify timer.
4) What color wires are on timer.
5) What other wires are inside switch box other than wires going to pump.

You posted under ST01C and are wiring timer to replace 3-way switch.
Open following link for specific illustrations:
http://waterheatertimer.org/ST01C-program.html#ST01C
http://waterheatertimer.org/pdf/ST01C-explanation.rtf

1) The timer replaces one of the 3-way switches. The other 3-way switch remains, but must be rewired.
2) The timer must replace the 3-way switch that receives power from breaker box. It cannot replace the other 3-way switch. This is because the timer Black wire must always receive power.
3) The timer blue wire must connect to Load (light)
4) The ST01C red wire is only used when wiring for 3-way.
5) When the red wire and blue wire are connected together, they reverse the timer program. When timer red and blue are disconnected, the timer resumes programming. Connecting and disconnecting the red and blue wires is how the timer mimics 3-way operation.
6) The remaining 3-way switch must be wired so it will connect and disconnect the red and blue timer wires. So the remaining 3-way switch has to be rewired to meet specific timer wiring.

The blue wire always goes to Load (light fan motor)

If you have Intermatic ST01C or EJ500, see wiring illustration on following page:
http://waterheatertimer.org/ST01C-program.html#ST01C
If this is not your timer, then add a comment.

Wiring is dependent if you are replacing single pole switch or 3-way switch.

For single pole switch replacement:
Old switch has two wires.
Connect these wires to timer blue wire and timer black wire, in either order for now.
Green connects to bare ground wire.

Turn power ON.
Click timer on-off button.
If lights turn ON-and-OFF, then timer is wired correctly.
If lights do not turn ON-and-OFF, then reverse blue and black wires.
Timer red wire is capped off with wire nut

If your lights involuntarily blink after pushing ON-OFF button, then timer red wire is connected where timer blue wire should be connected.

For 3-way switch replacement, there is also a wiring diagram shown on link above.
Keep in mind that ST01C and EJ350 cannot replace a 3-way switch wire-for-wire.
Blue wire must always go to Load.
The other 3-way switch is also wired differently.
Add a comment with careful description of your wire colors and I will respond.

You can also take advantage of fixya phone support.
Fixya expert will walk you through the steps while you are wiring the device for a price.

Timer is wired incorrectly.

1) If you have battery-operated Intermatic EJ500 or ST01C, with red, blue, black and green wires:
Then red wire is where blue wire should go. Swap blue and red wire.

2) If you have Aube battery-operated timer, add a comment and say if you are replacing single-pole or 3-way switch. And say where each wire is so far.

3) If you have GE Tork Intermatic UPM Woods Brinks Hagar Pass-n-Seymour Stanley Westek in-wall timer, with red, black, white and green wires, then you probably put red and white wires together.
Add a comment any time.

See instructions along with image at following link:
http://waterheatertimer.org/Program-wire-Utilitec-0192773.html

Heres how to wire timer
1) Timer-green-wire connects to bare ground wire.
2) Switch has 2 wires. Take switch wires and connect them to timer-black-wire and timer-red-wire. Choose either one for now.
3) In back of electric box are white wires twisted together and covered with wire nut. Connect timer-white to these wires.
4) If electric box does not have white wires described above, then connect timer-white to bare ground, along with timer-green wire.
5) Turn on electricity, and push ON-OFF button. If lights come on, timer is wired correctly. If lights do not come on, then reverse timer-red and timer-black wires.

You posted under EJ500 Intermatic battery-operated timer.
If you have different timer, add a comment.
I have tested EJ500 timer.

A) If this is new single-pole installation and lights click on-off when timer turned on, then you connected red wire where blue wire should be connected.

Manual says for single pole switch:
Timer-black-wire to Hot; Timer-blue-wire to Load (lights)
Here's how to wire timer correctly:
1) Timer-green-wire connects to bare ground wire.
2) Switch has 2 wires. Take switch wires and connect them to timer-black-wire and timer-blue-wire. Choose either one for now.
3) Put wire nut on red wire.
4) Turn on electricity, and push ON-OFF button. If lights come on, timer is wired correctly. If lights do not come on, then reverse timer-blue and timer-black wires.

B) If you are replacing 3-way switch, view wiring diagrams shown on link below, and then add a comment saying exact color of wires. To wire this timer for 3-way can require additional wire between switches. This is because EJ500 blue wire must always go to Load (light, fan, motor)
http://waterheatertimer.org/ST01C-program.html#EJ500-wire

C) If this is older timer that stopped working, check your bulbs. Then check timer battery. Manual says if timer stops working and bulbs are good, and battery good, then reset timer and reprogram. How to reset timer. Press reset button while holding down Next/ON-OFF button.
EJ500 manual has long list of programming instructions: Add a comment if you forgot parts of programming.
EJ500 manual
http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/ej500c%20-%20english.ashx

ST01C is battery operated timer with red, blue, black & green wire.
Red wire is used when replacing 3-way switch (for ex: light switch at each end of hall)

Red wire is capped off when replacing single-pole switch.

If red and black wires are combined, lights will blink.

If red and blue wires are combined, timer reverses ON-OFF function (just like a 3-way switch reverses).

See wiring diagrams for ST01C
http://waterheatertimer.org/ST01C-program.html#ST01C

If I understand correctly, you are replacing a switch with the EJ500 timer.
You mention a 'plug'

The EJ500 has 3 wires: Black Red Blue.
If you are replacing a single-pole switch:
The switch has 2 wires, one of these wires is the Hot-from-breaker and the other wire goes to Load:
Timer-black connects to Hot-from-breaker.
Timer-blue connects to wire-going-to-Load.
Timer-red wire is capped off. Red is not used for single pole switch.
If you connect wires and your lights blink, then you put the red wire where the blues wire should go.
If you connect wires and lights do not operate, try reversing the blue and black wires.

I posted images of EJ500 wiring (the Intermatic EJ500 and ST01C have identical wiring
http://waterheatertimer.org/ST01C-program.html#ST01C

If you are replacing a 3-way switch, the wiring is more complicated.
The EJ500 can not replace a 3-way switch wire-for-wire.
Diagrams on link above show wiring for 3-way.
Add a comment if you need more help.

Old timer: Intermatic EJ500 & ST01C timers have a battery. Battery operates the clock motor. Red wire is for 3-way circuit [a hallway with 2 switches is a 3-way circuit].

Utilitec timer, clock runs on 120Volt circuit instead of battery. So clock has to have power.

How to connect wires:
Black timer wire connects to hot wire from breaker box.
Red (or blue) timer wire goes to landscape lights.
White timer wire connects to white neutral wire [or if no neutral is available, connect to bare ground wire].
Green timer wire goes to bare ground wire.

How to find black hot wire and white neutral wire inside box: Disconnect and separate wires so you can test. Use ordinary tester. Power is on. There is only 1 black hot wire inside each electrical box. Test each black wire to bare ground until tester light comes on > that identifies the black hot wire. Next, test black hot wire to white wires until tester light comes on > that is the neutral wire. Exception: This test does not necessarily work with 3-way switches since they reverse each time switch is thrown.

One caveat of most In-Wall electronic switches/timers is that the device _must_ be installed at the switch box that has the power, in your case switch #1. In order to install it at switch #2, in your case, you need an extra wire between the switches (to carry the HOT wire), and unfortunately, the bare ground(ing) wire is not permitted to be used to carry current per National Electric Code (NEC).

In your case the wiring for the ST01 is as follows:

Switch box #1: Connect the incoming White wire to the White wire in the 3-wire cable that goes to switch box #2. Connect the incoming (Black) HOT wire to the Black wire on the switch/timer. Connect the Red wire in the 3-wire cable to the Red wire on the switch/timer. Connect the Black wire in the 3-wire cable to the blue wire on the switch/timer. Connect the green wire on the switch/timer to the 2 bare ground(ing) wires. If you have a metal box this connection should also have a pigtail that connects to the box with a green ground screw.

Switch box #2: Remove all of the existing wires from the 3-way switch. The three-way switch will have 2 screws the same color (usually black) and 1 screw (usually brass). For this scenario, one of the black screws will _not_ be used.

Connect the Black wire in the 3-wire cable coming from switch #1, the Black wire going to the lights, and a short Black pigtail together under one wirenut. The pigtail is then connected to the brass screw on the 3-way switch. The Red wire in the 3-wire cable coming from switch #1 is connected to one of the 2 black screws on the 3-way switch (pick one).

In effect you are installing a single switch at switch box #2. In fact, you can use a regular single pole switch if you want too.

To finish, connect the White wire in the 3-wire cable coming from switch #1 to the White wire going to the lights.

Grounding is the same as switch #1 except you'll need a pigtail to connect to the green screw on the 3-way switch.

That's it. You may want to check the battery compartment in the switch/timer, as sometimes they put in a pullout plastic tab to keep it from being energized until needed.

Now, the E1210 is a different animal, and can only be used to replace a single pole switch. You could use it by basically passing the power through to switch box #2 from switch box #1 and then cover switch box #1 with a blank plate. The ST01 could be used that way too, in which case the black on the device connects to the hot, the blue to the lights, and the red on the device is not used, nor will the Red wire in the 3-wire cable between the switch boxes be used.

That is a three way timer. There is no wire that the white wire gets hooked to. The black is the hot, the blue sends power to the device, and the red goes to a switch that connects it to the blue wire essentially. Here is a PDF of the directions, including wiring diagrams.

http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/ei600c%20-%20english.ashx