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04-08-2002, 02:18 PM
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#1 |
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Senior Member
 
Join Date: Sep 2001
Location: Seattle, WA, USA
Posts: 5,817
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Fiber optic in shift indicator?!?
Yesterday I (yet again) took the non-tilt steering column apart and adjusted it. One thing I noticed when I was cleaning the shift indicator. What I thought was a busted wire to a bulb in the indicator looks more like a fiber optic! There's no bulb, and strands of what looks like glass fiber run inside a sheath, and look like it should run down the length of the column and attach somewhere under the dash, then to the fuse box!
Is this really a fiber optic cable? Is that truely stock? If so I didn't know they were using this stuff as early as '69. Surprising. How do I replace it? Once these are broke they're not fixable. Where do I get a replacement? Where does it connect? ------------------ '69 3/4 ton C20 2wd w/ 350ci/400THM and a wood bed! '69 3/4 ton Custom 20 2wd w/ ORIGINAL 350ci/4sp Manual and a wood bed (parts beast). Seattle, WA. *See pics of my trucks and project at www.webshots.com!
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'69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA. |
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04-08-2002, 02:27 PM
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#2 |
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Registered User
Join Date: Feb 2002
Location: Greene, Iowa
Posts: 150
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you are right there is no bulb just a fiber optic line to a dash light
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70 3/4 ton 4x4 FOR SALE Greene, IA |
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04-08-2002, 02:54 PM
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#3 |
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CCRider
Join Date: Feb 2000
Location: Olive Branch,MS,USA
Posts: 2,232
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A lot of GM cars used fiber optics during these years. Corvettes and Caddys had fiber optics so you could tell that all your lights[brakes, turnsignals] worked from the drivers seat. And the quit putting them on the vettes in 71.
------------------ 72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS
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72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS |
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04-08-2002, 04:20 PM
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#4 |
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in WAY over my head
Join Date: Sep 2001
Location: Douglasville GA
Posts: 923
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I was suprised when I found this too. here was this 30-ish year old truck, with "state of the art" lighting on it. hehe, the fiberoptic line runs down the colum and actually runs off one of the bulbs in your factory guage cluster. pretty wild hehe
------------------ Projects Belair '71 C10 LWB to SWB conversion:C10 project page 65Chevelle pics coming soon |
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04-08-2002, 05:48 PM
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#5 |
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Join Date: Dec 1999
Location: Eastern - Manitoba Canada, Winnipeg
Posts: 4,369
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There is one unique bulb holder that the fiber optic cable attaches to.....the optic cable transfers the light to the indictaor on the column... the unique holder is fairly common on van dashes also...anything that has a similar shift indictor like ours should have that bulb holder in the rear of the cluster.
------------------ Senior active member of the best truck message board on the net. 71 1/2 ton Suburban 4x4, 350/350 72 1ton tow truck 402BB w/Holmes 440 wrecker / on propane 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd [This message has been edited by Rod (edited April 08, 2002).]
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Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife. |
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04-08-2002, 11:51 PM
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#6 |
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Recovering Truck Driver
Join Date: Mar 2002
Location: Orleans, NE USA
Posts: 1,883
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There is a fiber optic shift indicator light for sale on e-bay right now. I don't have a link, but saw it there this morning.
------------------ Ol' Buck: '72 Chevy 1/2T 4x4 shortbox stepside 350/350auto on '84 ralleys and 31/10.5s Angel girl: 67 Cutlass convertible 330, 3spd stick Greener: 90 GMC Jimmy 350/auto Chad Stephens Orleans,NE no name yet: 72 442 under serious construction
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67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska |
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04-09-2002, 12:03 AM
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#7 |
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Registered User
Join Date: Jun 2001
Location: Springfield, MO
Posts: 1,098
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Were these on all the trucks?
------------------ Nick Rodenberg Wellington, MO http://nickrod.port5.com You can click on "My 72 Chevy Truck" I have a 72 Cheyenne 10 with a V8 350 and a TH-350 auto-tranny. White/Ochre/White Runs well... working on body. Hoping to have completed in March when I turn 16
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Nick Rodenberg 72 Cheyenne 10 V8 350/TH350 white/ochre/white/ochre, ochre/saddle interior Retired and in the dry... still runs. I now drive Red '01 Ford Focus... better MPG!!! |
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04-09-2002, 12:14 AM
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#8 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Pretty sure they were. All the auto matics anyways.
------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. If you need a pic posted, E-mail me at longhornmail@yahoo.com Andy, in Columbus Ohio |
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