Alfa Romeo Forum banner

Tailgate Wiring Loom - Wiper Arm Position

7K views 28 replies 10 participants last post by  cue2 
#1 ·
Hello All,

My Wiper arm, most of the time, doesn't reset to the proper position. It seems well documented that this is due to the tailgate wiring loom(s) breaking over time. Does anyone have the wiring diagram, or know which wires need to be replaced to remedy the wiper arm issue?

I know the parts are available at £50 each, but a new wire seems like the cheaper and more robust solution, that won't just break again anyway.

Thanks,
 
#2 ·
#6 ·
" think its just an Alfa/Fiat/ Lancia feature "
And I've noticed several Audi A3 Sportbacks with their wipers parked vertically. I bet there's no cliche amongst Audi owners for that. Just people defeated by the cost of fixing them, even though it's probably the same part.
 
#12 ·
The wiper comes in very handy when reversing.

The mirrors distort distance, so if you were to rely on then you can expect to reverse into things a lot.

Especially without reversing sensors.
 
#13 ·
The car has a window and wiper therefore I like to take advantage of them - like any good driver would.

The problem is intermittent, which suggests frayed wires me, and seems well documented on the forums. I was hoping for a diagram before going in blind! I don't want to throw £100 at two looms unnecessarily.
 
#14 ·
My wiper seems to be back working how it should, but look at this https://www.shop4parts.co.uk/?name=...rm=Alfa_Romeo_Giulietta_2.0_JTDM_Wiring_Looms £130 for both sides. You shouldn't need a wiring diagram, disconnect the battery, cut the old rubber gaiter off to expose the original loom and cut and crimp each wire of these replacements into the loom based upon wire diameter. Then tuck the original wires into the two cavities in the roof and boot lid, these replacement looms use a better quality wire that will cope with many more openings and closings of the tailgate than the original wire. So far I've only had to replace 1 wire for the lock, so if you do it your self use "tri-rated" cable as it is multistranded and very flexible.
 
#18 ·
Hi Jay,

I recently looked into this and roughly noted this down:

Right Loom

F036 right light in hatch (Tail, brake, reverse, fog light)
N016 Rear wiper
P025 Power supply antenna
P055 demister
Antennae



Left Loom

F040 Third brake light
F035 left rear light hatch (Tail, brake, reverse, fog light)
N057 motor lock tailgate
I033 switch to external trunk handle
P055 demister
Washer pipe


The Sencom looms are actually a very reasonable price (compared to OEM)

Here is a bargain for the pair at €100 (few quid more for postage to UK)

2x Kabelbaum Kabelsatz Kofferraum Heckklappe ALFA ROMEO GIULIETTA (940_) li + re | eBay


If you're considering splicing the washer cable, you might as well get the whole RHS loom and replace all of it. (8 wires or so). That might be more straightforward than having to get the wire into the existing rubber sleeve.

Note: If you splice just one wire, possible scenario is that after you're done, you notice that the faffing around has pulled another wire out, which would be annoying after the effort.


BTW I have not replaced the looms yet. One point I am not sure about is what do with the antennae cable (replacement loom doesn't come with that).
 
#16 ·
Problem is like in my case I couldn't find the individual wire that was broken without cutting into the gaiter due to the wires being twisted and so tight. Next time I go in there I'm going to do the lot for piece of mind. The washer pipe is a bit daunting as it means you've added two new joints that could cause problems in the future!
 
#20 ·
Fixing the wires won't necessarily fix the wiper problem - it hasn't with mine. Do a search on here and you'll see that some suggest it's the body computer (possibly caused by the damaged wires). It would be nice to get a definitive answer as to the cause as it seems to be getting more common now as the cars are getting older.
 
#21 ·
I got mine fixed as soon as I noticed a wiring fault triggered a tail lamp bulb warning. An £800 warranty job, before any ecu damage could be done. Perhaps this wire would not cause damage to an ecu as the tail lamps are controlled by a simple switch whereas a wiper is more part of the cars "brain".
 
#28 ·
I think everyone is clear on the availability of this loom, including me in the opening post. Pezzodicento kindly identified the wires which is what I'm looking for (but a wiring diagram would help further, if you have another spare minute).
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top