Havver (ASTRA TT fan blog)

Step 1: Remove battery cables!
!!! If you are a professionel, then maybe not, but to avoid any risk of damage, please do it and remove bat. cables.
 
Step 2: Remove the transparent plastik from the roof module:

Step 3: With Torx screwdriver screws screw off the 2 screws
The screws won't fall out! Size is: TX20

Step 4: Unlock patent, roof module is now free

Step 5: Cable contacts

Cut 3 cables : blue(green striped); brown(white stripes); blue(red stripes)
Leave some centimeter cables from the switch, to work comfortable




Astra TT (Switch)     --->Panel            Panel   --->Astra TT
Blues(green stripes) --->Green         White     --->Blue(Green stripes)
Brown(white stripes) ---> Yellow             Blue --->Brown(White stripes)
Blue(red stripes)        --->Orange       Brown   --->Blue(red stripes)

Panel         ---> Astra TT roofmodul
Red  (12V)   ---> Red (right edge)
Black (ground) --> Yellow(left edge)

Do the soldering of the cables, fix the cable positions with hot melt glue or silicon paste. Please be very clean and professionel and put some protection until you use the solderiron else you will damage your interior.

The schematic what you are now working on look's like this(sorry for the german word's for colors):

Step 6: Jumper settings
         Base time is 25sec which is increased with Jumpers
         From cable side ---> 8,4,2,1 sec
         So to get a 31sec settings (Okay for Astra TT): Place two inner Jumpers and leave the two outers free
         25sec + 4sec + 2sec =31sec    (If your TT is slower, then just add a second and it will work as you expect)
         So as you see the electronic can be set from 25sec up to 40sec

Step 7: Place the modul, It has really no weight so the foam keep's it where it should.

 
Step 8: Put it together,  doubleclick, happyness...