I have a GE 5326-41L3 timer 120V, 20A in a wall outlet controlling outside lights. I need a programming manual so I can reprogram it to turn on/off light at right time

SOURCE: Need a manual on how to program GE 5123 wall timer

I replaced the unit as it appeared to be defective.

SOURCE: installation of a basic GE in-wall timer

The black and white, The red wire is the ground. Ron

SOURCE: Woods In-wall Timer Heavy Duty, Model #59018 -- I

Quick answer:
1) Programming steps say 'press clock key to return to current time and day'
2) Use mode button and change between AUTO & RND >> try manual override in each mode
3) Does timer turn lights on-and-off with program, or do they blink too?
4) Swap Black and Red wires
5) Try timer on light in different room, on different circuit breaker
6) Timer might be defective

Longer answer:
Woods 59018 manual does not show troubleshooting steps except 'check wiring; switch Red and Black leads; and/or reset programming'

Seems unlikely you could program timer unless timer is wired correctly ... unless there is a short of some kind.

To review wiring.
Green goes to bare ground wire.
White goes to Neutral white wire (neutral is usually 2 or 3 white wires twisted together and shoved to back of box)
Black must connect to Hot from circuit breaker
Red must connect to Load (light, fan, motor etc)

How to test wiring:
Disconnect timer and set aside.
Mark each wire
Separate wires in box so they don't touch
Use ordinary tester (you can tape tester leads to wood sticks)
Turn on power
You should have two black wires that were originally connected to switch
Test black wires to bare ground > when tester lights up, that is the Hot wire.
The other black wire goes to Load

Now you want to find the neutral.
Test the Hot black wire to white wires in box.
When tester lights up, that is neutral.

If everything checks out, I guess timer is defective.

SOURCE: I just installed a GE Smart Digital Timer. After

Timer wiring instructions shown on following page:
http://waterheatertimer.org/GE-timers-and-manuals.html#15071

You connected the white wire and red wire together, and that is why lights are clicking on-off.
I test timers and have done this intentionally during testing.
Follow instructions shown on link above, and GE timer will work correctly.
Same wiring applies to Tork, Swilight, Utilitec, Woods, Leviton, Intermatic non-battery operated timers.
Instructions are different for Aube, Brinks, UPM and Intermatic battery operated

SOURCE: Replaced intermatic wall timer with GE timer -

You have two switches controlling same outdoor lights, then that is a 3-way switch
GE timers do not work for 3-way switch.
Aube T1033, Intermatic EJ500, Intermatic ST01C, UPM ETW193 & 350, and Brinks 46-1022 work for 3-way switching.

http://waterheatertimer.org/GE-timers-and-manuals.html#15071
http://waterheatertimer.org/Woods-timers-and-manuals.html#Brinks
http://waterheatertimer.org/UPM-timers-and-manuals.html#ETW
http://waterheatertimer.org/Aube-timers.html
http://waterheatertimer.org/EJ-500-ST01C.html