Fuse G and H keep blowing

Gotta love that wiring . . .
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vincefiat
Posts: 38
Joined: Fri Jul 07, 2017 12:59 pm
Your car is a: 1979 Fiat Spider 124
Location: Laval, Quebec

Fuse G and H keep blowing

Postby vincefiat » Sun Sep 17, 2017 4:46 pm

Help, not sure what went wrong. Suddenly fuse G and H keep blowing when I put light switch on. Even with rear harness disconnected it blows as soon as you put on switch to second level.

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seabeelt
Posts: 1514
Joined: Tue Feb 19, 2008 4:22 pm
Your car is a: Fiat Spider - 1971 BS1
Location: Tiverton, RI
Contact:

Re: Fuse G and H keep blowing

Postby seabeelt » Mon Sep 18, 2017 1:38 pm

Believe those are related to the headlights
Michael and Deborah Williamson
1971 Spider - Vesper - w/screaming IDFs
1979 Spider - Seraphina - our son's car now sold
1972 Spider - Blue - our son's current car
2005 Audi Allroad
2010 Dodge Ram 1500 Hemi (replaced the Dakota)

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aevansgatech
Posts: 342
Joined: Mon Jul 27, 2015 2:51 pm
Your car is a: 1982 Spider 2000

Re: Fuse G and H keep blowing

Postby aevansgatech » Mon Sep 18, 2017 2:15 pm

Yep, check connections up to and including the headlights
1979 Spider 2000 (gone)
1984 Pininfarina Azzurra (for sale)
1982 Spider 2000 (here to stay)

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vincefiat
Posts: 38
Joined: Fri Jul 07, 2017 12:59 pm
Your car is a: 1979 Fiat Spider 124
Location: Laval, Quebec

Re: Fuse G and H keep blowing

Postby vincefiat » Mon Sep 18, 2017 3:12 pm

Thanks I have it narrowed to the front park/turn signal lights. The light itself has 3 wires (blue, black, brown). Not sure where to connect them. I have a light blue wire and red/yellow. I think the signal light is not original and does not match wiring diagram.

spider2081
Posts: 2118
Joined: Fri Jan 27, 2006 11:45 pm
Your car is a: 1981 Spider 2000
Location: Wallingford,CT
Contact:

Re: Fuse G and H keep blowing

Postby spider2081 » Mon Sep 18, 2017 4:54 pm

I think 1979 Spider fuses 3,4,5 and 6 are head lights and 7 and 8 are parking lights, license plate lights, dash lights and cigar lighter light.

I don't think there can be a common problem for both fuses blowing. The front park/signal light wires and sockets is where I would begin as you say you have the rear disconnected and the fuses still blow. Fuse G is right side front and fuse H is left side front. I would remove the bulbs and inspect the light sockets for possible shorts between the bulb contact and the metal housing. For both fuses to be blowing it sort of points so something being incorrectly assembled. Electrically the fuses do not protect a common circuit.


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