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Author
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Topic: How to diagnose rear window defroster?
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SydeWaySix
CAFords OG
Member # 3596
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posted
 
 
How can I determine if my rear window defroster is working? The switch on the dash lights up when I press it, but the actual defroster on the rear window doesn't work. Does anyone know how I can diagnose this? Any common causes that I can check on that may solve this issue? Thanks!
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2013 Boss 302 #356. Performance White. Stock.
1965 Fastback GT Restored to stock spec.
Posts: 9882 | From: Bay Area | Registered: Dec 2002
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NEIGHT
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Member # 8741
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posted
I have the same problem too, I ride around with frozen windows in the morning to work. lol
Posts: 18535 | From: EA$T $IDE REDWOOD CITY | Registered: Nov 2008
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Blind
2.3L
CAFords OG
Member # 3052
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posted
the rear defrost is just a wire grid, on each side of the window is a connector that hooks up to that grid. Make sure it's plugged in on both sides ![[Wink]](wink.gif) then take a test light and tap into one of them when you turn it on, if it lights up its good to that point, if not there's a break in the wires going to the window or on the window grid itself.
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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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SydeWaySix
CAFords OG
Member # 3596
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posted
quote:
Originally posted by Blind:
the rear defrost is just a wire grid, on each side of the window is a connector that hooks up to that grid. Make sure it's plugged in on both sides then take a test light and tap into one of them when you turn it on, if it lights up its good to that point, if not there's a break in the wires going to the window or on the window grid itself.
Thanks, I'll try to test it with a test light ![[patriot]](graemlins/patriot.gif)
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2013 Boss 302 #356. Performance White. Stock.
1965 Fastback GT Restored to stock spec.
Posts: 9882 | From: Bay Area | Registered: Dec 2002
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JZTRK
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Member # 7641
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posted
a volt meter would work too
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ANY THING PAST FIRST AND IM BREAKING THE LAW !!!
1990 lx Hatch (sold) 2014 GT Track Pack (sold) 2016 GT350 (sold)
1 of 16 2019 kona blue GT350R
Posts: 771 | From: My 44 Magnum says HI | Registered: May 2007
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87coupe510
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Member # 6150
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posted
I have the same issue!! Right on for starting this thread Ian! haha
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RAIN OR SHINE I STAY SIDEWAYS IN MY STANG!!!!!!!!!!!
1993 Coupe "Stock" "It's Just Exhaust"
Posts: 1375 | From: EAST BAY | Registered: Oct 2005
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wilber650
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Member # 10360
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posted
Alot of the times is cause some has broken one of the lines... Or juss bad connections.. Like my boys got ruined when he got the car tinted.
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2014 mustang Gt
2004 f150 fx4
1998 Cobra sold
1994 Gt sold
Posts: 522 | From: antioch | Registered: Oct 2010
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