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puddy's Avatar
 
Join Date: Sep 2013
Location: Ontario, Canada
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Blown fuse on wipers & speedo

This weekend I was at the track and it started raining. I turned on my wipers and almost immediately my wipers, tach & speedo stopped working. I saw a fuse was blown. It's a 25a fuse. Anyways the next day at the track I accidentally hit hit he wipers again, blowing the fuse again. Anyways I've used my wipers before without blowing fuses, any idea why it would be blowing all the sudden? I don't want to be blowing a fuse any time I turn my wipers on.

Thanks

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Cheers, Chris
1986 951

SOLD: 1975 Carrera / 965 tribute w/ 1989 3.3 turbo 8.5:1, custom Evergreen K27 7200, 964 cams, euro CIS, TEC1 dual plug, rarlyL8 headers & hooligan pipe.
Old 07-19-2015, 04:03 PM
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Look at your grounds
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Lorraine 83 SC CAB RoW
2003 C4S coupe
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76 BMW R60/6
Old 07-19-2015, 04:17 PM
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Is there a diagram showing all ground locations?
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Cheers, Chris
1986 951

SOLD: 1975 Carrera / 965 tribute w/ 1989 3.3 turbo 8.5:1, custom Evergreen K27 7200, 964 cams, euro CIS, TEC1 dual plug, rarlyL8 headers & hooligan pipe.
Old 07-19-2015, 04:43 PM
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There is and you could do a google search to find it but I'm pretty sure the one you're looking for is located behind the heater controls under the dash. They need to be free of oxidation and tight otherwise you will be pulling more current then you normally would. Same is true for your fuse and switch side connections. Nothing draws excessive current like oxidized and/or loose connections. I might ad that worn motor brushes will cause the motor to draw excessive current.
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Lorraine 83 SC CAB RoW
2003 C4S coupe
07 BMW R1200RT
76 BMW R90S
76 BMW R60/6

Last edited by wolds; 07-19-2015 at 05:36 PM..
Old 07-19-2015, 05:34 PM
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My neighbour and I tested the fuses and wipers and have narrowed down the problem to the wiper or wiper motor perhaps. Is the wiper switch prone to wearing out or does the wiper motor commonly wear out?

Right now we've removed power to the wipers via the fuse panel so if I accidentally bump my switch I don't lose the tach & speedo.

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Cheers, Chris
1986 951

SOLD: 1975 Carrera / 965 tribute w/ 1989 3.3 turbo 8.5:1, custom Evergreen K27 7200, 964 cams, euro CIS, TEC1 dual plug, rarlyL8 headers & hooligan pipe.
Old 09-07-2015, 05:41 PM
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