What is the age of the car & the age of the engine?
They did three types of 3-plug engine loom for all petrol engines in both Saxo & 106(Ph2)
If your 106 is a 3-plug, then it has the option of 3 different chassis plugs (dependent on its age.) Providing it is the larger single plug type (there are 2 pin layouts in this, again dependent on year) then you can plug a matching Saxo loom in and it will work with all functions.
You need to identify which loom is on the 106. Check this:
http://www.saxperience.com/forum/sho...d.php?t=441413