Alfa Romeo 147 Headlamp Wiring Insulation

Worn insulation on headlamp wiring. This is a problem which plagues many Alfa Romeo 147 owners, and according to my mechanic, it is often found on the left headlight for some strange reason.

In my case, both the left and right headlamps showed damage to the wiring insulation.

If this problem is not quickly resolved, there is a risk of blowing the headlamp or fuse should the wires accidentally touch and short. My mechanic had advised that I send the car to a specialist to have the headlamps rewired, but I thought of a cheaper and quicker solution.

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An Easy Solution

I had initially used polyolefin heat shrink tubing as the repair material but this proved to be too difficult to work with.
I had initially thought of using polyolefin heat shrink tubing as the repair material but this proved to be too difficult to work with.

The solution involves using silicon tubing to replace the wire insulation. The solution may be simple enough, but getting the wiring into the tubing within the tight confines of the headlamp assembly can be tricky.

I had initially thought of using polyolefin heat shrink tubing (shown at right) as the repair material but due to the less rigid structure of this tubing, it proved to be too difficult to work with when trying to run the wiring through it.

The tight space with which to work in also made it even more difficult. If you’re tempted to give this a try, I would advise against it, unless you plan to remove the entire headlamp assembly and work on it outside the car bonnet.

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I have found silicon tubing (see first photo below) to be just right for the job. Let’s begin – here’s how to fix the Alfa Romeo 147 Headlamp Wiring Insulation.

silicon tubing
1. First, get your hands on some silicon tubing. The smallest variety with an internal diameter of about 2 or 3 mm will do. This is similar to those used in aquarium pumps. I got mine from Ace Hardware.
Buy about 4 to 5 feet length. See links at the bottom of this article for an idea.
alfa romeo 147 headlamp wiring insulation
2. Open the headlamp assembly by first releasing the two metal latches that secure the assembly cover.
alfa romeo 147 headlamp wiring insulation
3. Remove the assembly cover.
alfa romeo 147 headlamp wiring insulation
4. Pull the headlamp wire out from their place gently. From the photo above, you can see that the insulation to this wiring is already worn and have disintegrated.
alfa romeo 147 headlamp wiring insulation
5. Cut a length of tubing equal or almost equal to the length of wiring to be reinsulated. There should be three wires in each headlamp which require this. Proceed to cut the entire length of this tubing longitudinally (down its entire length) as shown in the photo above.
alfa romeo 147 headlamp wiring insulation
6. Pry open the slit at one end of the tubing and push a wire through its entire length. This is what I am trying to do in the photo above and it’s the hardest thing to do in this whole exercise because of space constraint.
alfa romeo 147 headlamp wiring insulation
7. Here are two out of three of the wires already cladded with the silicon tubing. You’ll get the hang of running the wires through after doing a few of these.
alfa romeo 147 headlamp wiring insulation
8. Once all three wires have been cladded or insulated with silicon tubing, push them back in place into the headlamp assembly. The disintegrated pieces of wiring insulation can be seen here inside the lamp assembly.
alfa romeo 147 headlamp wiring insulation
9. Replace the assembly cover and secure it by pushing the two metal latches back in place.
Proceed to work on the other headlamp if necessary. That’s it!

Other related sites of interest:


ALFA ROMEO


 
ALFA ROMEO ACCESSORIES AND MERCHANDISE


 
BOOKS ON ALFA ROMEO AND SPECIFIC MODELS




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