How To Solder Rear Window Defroster

The act of scraping or cleaning a rear window can sometimes sweep away enough of the metal to interrupt the circuit which in turn prevents electricity from being transmitted to that segment of the car defroster.

How to solder rear window defroster. A damp towel on the glass directly behind the solder point can help prevent glass breakage. Clean the surfaces with alcohol and use 60-40 rosin-core solder. There should be a small two wire connector coming out of the back shelf near lower drivers side of rear window. You will need a defroster repair kit from your local hardware or auto parts store.

As I said after I soldered the drivers side plate to the rear window the wire within the window that goes from the top of the plate passengers side to the top of the plate drivers side was the only wire heating. Disconnect the wire closest to the passenger side of the car and attach the test lamp clip to the wire not the little metal tab attached to. Wait a minute longer and remove the masking. If youve tested your rear defroster using the best testing methods and have located a break in your defroster lines proceed with your repair.

Using the sandpaper from the kit sand the rough solder surface on the loose tab. Tape off the section of the rear defroster to be repaired. Those metal tabs located along the edges of the back window can separate from the defroster and are a common reason for defroster failure. The Frost Fighter Solder Kit is a solder paste used to re-solder separated main power tabs to automotive rear window defrosters.

Let the paint dry and you can usually use your defroster within an hour. Youll need an ohmmeter which uses an outside source of power for its reading not a test light. Disconnect both wires from either side of the defroster grid and touch one end of your tester to each wire. Maybe the rear window was replaced with a window without the defrost option.

Well good luck with that. Use the alcohol prep to clean the tab and the grid area where the tab broke off. Make sure your iron is hot before starting as it typically takes a good deal of heat to melt the paste. If it doesnt check for a bad fuse and replace it if necessary.

You can use the. Rear window defrosters can be challenging to troubleshoot and repair. Shake the small vial of conductive paint thoroughly and simply brush the paint over the scratch. In this video 1A Auto shows you how to diagnose and repair a damaged defrost grid panel.

It will consist of a small jar of metallic paint a brush and a template. As you might imagine the defrost lines that make up this grid are fairly sensitive to physical damage. Check whether power is getting to your defroster grid. This Easy Trick Will Defrost Your Car Window In Seconds.

This video applies to most vehicles with a defrost grid on the rear. Place the template over the damaged section of grid and brush on two coats of paint. It may take a third hand to hold the tab against the grid while you solder it. Kits usually consist of conductive paint and a masking template to reduce the risk of over-application.

That would be the defrost connector to the window lines that arent therelol. Make sure the rear defroster switch and the ignition key are turned on. If the light comes on you have power. The Doc posts many of the most challenging defroster repair questions here.

Its an easy DIY fix thats certainly cheaper than window replacement. The high metals solder paste holds the defroster tabclip in place during positioning and melts quickly when heat is applied. A test light uses the power supplied in the circuit to light the bulb in the tool. Apply the solder paste to the defroster use a soldering iron 200-watt is best.

Questions run from rear defroster tint damage and demister tab bonding to more challenging questions of how to repair a rear defroster. I am ordering the rear window defogger repair kit as suggested. In this video series I go through the process of diagnosing and repairing a rear window defroster that will not work. If you know how to solder and have a high-capacity soldering iron or gun solder the tab back on.

This video show ho. Wait a minute and add a second coat.

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