found this online from other make (Audi) owners with similar issues
Okay, the results are official. This LADG5L swap to LADG5 works perfectly.
The LADG5(4 Pin harness connector) ballast is obviously available for cheap from Mopar, however the earlier model LADG5L(2002 A4) is available but more expensive, similar to Audi USA pricing.
Some 2002 A4 models use the LADG5L ballast(12Pin Harness Connector) such as I have.
I have concluded that if you swap out the 12pin harness connector with a 4 pin harness connector, you are able to use the newer LADG5 ballast.
The wiring is exactly the same for the two different model Ballast harnesses. There's 12VDC and 0VDC. The only thing you need to do is pull the 12VDC and 0VDC pins from the ballast and insert them into the 4-pin harness connector in the new locations. I made 2 errors in guessing where they go when I installed and powered my Ballasts. Thanks goodness for Audi Engineering, I didn't hurt anything. On the third attempt, the xenon came alive. I will include two photos that gave me a bit of a headache, the first is a picture of the correct location of the wiring swap to the 4pin connector. The second is a drawing of the method for removing the pins without breaking anything. You owe me a beer if this helps you too!
01-25-2010, 11:45 PM
Here's a drawing of the method for removing the pins without breaking anything.
Here's a picture of the correct location of the wiring swap to the 4pin connector
Just so you guys know, for anyone with a 12-port connector who needs to swap to a 4-port, but can't find a 4-port, you can cut the 12-port down into a 4-port and make it work.
Take the wires out of your 12-port using a pin or just destroy the plastic around them:
You can re-use the 4 ports where the wires were originally IF they're still intact. (mine weren't so I chose the other side of the connector):
Cut the switch in two, making sure you do not damage the 4 ports you want to use:
Now place the wires into the now-4-port connector making sure the wires go into the ballast in this pattern:
Plug everything back in and:
Hope this helps anyone who can't get a hold of a 4-port connector in time. I was on a very tight schedule and had no other way of doing it.
and having found that theres only 2 pins you need to worry about, check this....
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