Hoi Kristof, The problem was solved, the causes identified -- but it is probably not fixable. I found the relay underneath the back seat, and it is okay. But sadly, the printed "wires" on the glass are totally gone, all oxidized away. There are only stripes of brown paint. They look like wires at first, but then one realizes that they are translucent -- there is practically no metal left in them.
Thanks for the link to the Frost Fighter firm. Their product looks very intereting, and would probably solve my problem. So far, I have only 100% original vintage parts on the Politiekever, and would like, if possible, to use only items that might really have been used in 1970 on a German police car. But I might have to compromise. It is good to know about Frost Fighter! Bert Knupp in Tennessee -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Kristof Carton Sent: Thursday, November 26, 2009 3:57 AM To: Air-Cooled Volkswagen Discussion List Subject: Re: [vintagvw] Rear window defroster wiring I'd better put in the link though.... http://www.frostfighter.com/ ----- Original Message ----- From: "Kristof Carton" <[email protected]> To: "Air-Cooled Volkswagen Discussion List" <[email protected]> Sent: Thursday, November 26, 2009 10:53 AM Subject: Re: [vintagvw] Rear window defroster wiring Hey Bert, I've been away for a while and only just saw this post. Did you already fix the problem? Maybe this site will help out a bit, if not too late. Anyway, Good Luck Kristof Carton ----- Original Message ----- From: "Bert Knupp" <[email protected]> To: "'Air-Cooled Volkswagen Discussion List'" <[email protected]> Sent: Saturday, October 17, 2009 11:00 PM Subject: [vintagvw] Rear window defroster wiring Volks, The previous owner of my '70- beetle disconnected the rear defroster, leaving a black wire in black spaghetti tubing dangling under the car, and no visible connection up front at the fuse box. The little toggle switch is under the dash, and it seems to be okay, though not connected to anything. I'm guessing it's a grounding switch for a relay. Who knows the correct factory routing for this wiring circuit? My schematic shows a relay, though none is present up front in my car. I'll assume it draws coil power from a #15/54 circuit somewhere. What's the correct original wiring and routing for the rear-window defroster? I'm guessing I'll need to thread a new front-to-back wire (1.5 mm?) parallel to the main harness. I need to figure out where my orphan black wire comes from -- and goes to. Do I pull #30 power from my voltage regulator's battery terminal? The printed wire grid on the glass passes cursory visual inspection -- no obvious breaks -- but I haven't put a meter to it yet. Does anybody know what the proper (disconnected) resistance for it ought to be? You can send me stuff off-list at [email protected], if you'd like. Bert Knupp |__n__ (_____)º (Ô\_|_/Ô) ü ° ° ü Polizeikäfer '70 __________ Information from ESET Smart Security, version of virus signature database 4638 (20091126) __________ The message was checked by ESET Smart Security. http://www.eset.com
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