I just "did it", meaning I was succesful at extracting the indicator relay on 156 1.8TS '02 (with VDC/ASR). The one that is a horrible job to get out of - thanks to the fantastic build of Italian Design, well... It's a job. Definately. BUT it can be done on your own driveway.
Reason for posting is that I read about... 30 or so topics in here, about the indicator relay. There were several "you need to remove the steering wheel" and just about that's it. I took few pics, never mind my one is LHD (Finland, you know :-) so bear in mind that everything, probably, is the opposite on RHD. Basic principles still apply, so here goes nothing!
Also please correct me on my English terminology on parts it's at fault, I have real issues with naming tools and everything like that.
Also for a note, here are the specs off the BLACK relay hidden under steering column... I would assume the relay to be same on all markets, but no guarantee there - it's Alfa, after all!
12 V 42/92W
1) Unplug battery and wait for a MINIMUM of 10 minutes (eLearn), suggested to be very safe is 30minutes to one hour
2) Remove the lower steering column cover, 3x Philips screws
3) Remove the steering wheel airbag unit. 3x Allen bolts(?) 5mm, need the longer end of the tool. Might be pretty tight, definately was for me! Those are bolts btw, and at least for me the airbag started to move out of the steering wheel while undoing these bolts. After you *CAREFULLY* removed the airbag from steering wheel housing, unclip the GREEN holding clip as shown on the image - then you can carefully prise off the airbag connector. Careful, at least for my 12 year old cables they felt like they'd be dying to snap at any moment!
!!!DO NOT TOUCH THE RED CIRCLED ONE!!!
4) Remove steering wheel, undo the black "cover" for the nut (just pull it out, wench it or prise it out, whichever works) and undo the 24mm nut. After undoing the nut I made markings with a permanent marker so I should be able to get the steering wheel back in the very same spot. Hopefully. Now put the nut back in loosely and start pulling the wheel back, it should loosen up pretty soon
5) Undo 3x Philips screws on the spring loom (yellow circles) and *CAREFULLY* pull the loom towards you. For me it was stuck on the topside so I just turned it from below to make room for the VDC thing to move out a bit
6) Undo/loosen 2x very small Philips screws on the VDC part, the one with Wheel Angle Sensor (I think) (red circles)
7) Prise the relay out from behind the VDC sensor. It should come out with only a little force - and go shopping! I left my car as is since no shops open at this time, have to wait until tomorrow. Took me 1.5hours to get to this point, tho next time it's gonna be only half of it.
Oh, and don't forget to get a drink afterwards, this is painful project enough! Also, remember when reconnecting everything, when you reconnect the battery: make sure all doors are closed etc, and don't touch *anything* in 2 minutes after reconnecting battery. Or you might have a messed up A/C (automated version)
I hope this clears this thing once and for all, I hope - so maybe no more "How to change indicator relay on 156??" I presume the same thing does count for Alfa 147 and GT as well, but not sure.