Rear Window Defrost Wires
#1
Intermediate
Thread Starter
Rear Window Defrost Wires
Hi, new to the C4's. Just purchased a 1996 coupe. Now trying to start repairing all the things I have found wrong. At the rear hatch struts I found an elecrical connection to the defrost grid. One side is detached from the glass. Can it be repaired or is the defroster toast? Thanks in advance for any advice.
#2
Burning Brakes
Member Since: Mar 2013
Location: Illinois/Wisconsin Line
Posts: 1,131
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4 Posts
If any of those black thin lines r broken They can easily be repaired by urself
http://www.brandsport.com/pmtx-15067...kqDRoC1dnw_wcB
Every auto part stores sell them even Walmart
http://www.brandsport.com/pmtx-15067...kqDRoC1dnw_wcB
Every auto part stores sell them even Walmart
#5
If the terminal to the glass is detached it's still repairable. There are different schools of thought as to the "how to". The FSM mentions solder and that's how I've repaired previous ones but with newer technology then perhaps a "conductive epoxy" might do as well or maybe even better. For the novice it might be the preferred, the solder operation for someone that doesn't do it frequently could be challenging.
I interpreted your situation to be the terminal and NOT just a break in the grid. Is the terminal and wire still attached to the strut and the wire just pulled loose from the solder joint?
I interpreted your situation to be the terminal and NOT just a break in the grid. Is the terminal and wire still attached to the strut and the wire just pulled loose from the solder joint?
#6
Intermediate
Thread Starter
If the terminal to the glass is detached it's still repairable. There are different schools of thought as to the "how to". The FSM mentions solder and that's how I've repaired previous ones but with newer technology then perhaps a "conductive epoxy" might do as well or maybe even better. For the novice it might be the preferred, the solder operation for someone that doesn't do it frequently could be challenging.
I interpreted your situation to be the terminal and NOT just a break in the grid. Is the terminal and wire still attached to the strut and the wire just pulled loose from the solder joint?
I interpreted your situation to be the terminal and NOT just a break in the grid. Is the terminal and wire still attached to the strut and the wire just pulled loose from the solder joint?
I was not aware of any "conductive epoxy". I would try to solder it but was concerned with cracking the glass. If I get this fixed, my next problem may be in the grid.
I have to start shopping for a factory service manual.
#7
Race Director
Both of the wires on my car came loose and I was able to solder them back on without problems.
#8
Safety Car
After repairing my broken solder joint at the grid, I put a blob of RTV on the wire, so the wire does the flexing as you close the hatch, rather than flexing the solder joint! Since the wire was already broken, I used a slightly longer wire for the repair, to reduce the stress on the solder joint.
#10
Get a good soldering iron and solder it back on.
Remove the wire from the rod and tin the end of the exposed wires. If there is enough slack, you could cut the old exposed wires off and re-strip to have fresh wires. But you'll want to tin the exposed wires, then tin the part on the grid those wires go to. Get a nice blob on the grid.
Though make sure you have a towel laid out to catch any solder drippings.
Then connect the wire to the rod, and tape it so the exposed wire stays aligned with the grid that has the solder blob. And apply a soldering iron to the exposed wire along with some solder and get a good blob on and quickly remove the iron.
Let sit for a bit before removing the tape.
http://store.curiousinventor.com/gui...older/prepare/
Remove the wire from the rod and tin the end of the exposed wires. If there is enough slack, you could cut the old exposed wires off and re-strip to have fresh wires. But you'll want to tin the exposed wires, then tin the part on the grid those wires go to. Get a nice blob on the grid.
Though make sure you have a towel laid out to catch any solder drippings.
Then connect the wire to the rod, and tape it so the exposed wire stays aligned with the grid that has the solder blob. And apply a soldering iron to the exposed wire along with some solder and get a good blob on and quickly remove the iron.
Let sit for a bit before removing the tape.
http://store.curiousinventor.com/gui...older/prepare/
#11
Burning Brakes
There is no need to struggle trying to repair this, the easiest and most efficient method is using this:
http://www.frostfighter.com/index.htm
http://www.frostfighter.com/index.htm