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Post By r67cat
03-27-2013, 11:32 PM
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CC Member
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Join Date: Aug 2002
Location: Los Angeles,
CA
Cobra Make, Engine: Superformance #243 - 351W stroked to 418
Posts: 456
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Not Ranked
Tail lights on but brake lights off -
Very sorry to post something that's probably been covered at length many times over, but my searches both on the 'net and on these forums didn't produce the answer I need. I have a very early car (# 243) and after a night cruise tonight, I noticed I didn't have any brake lights backing into the garage. I remember this happening years ago, but forgot the remedy. Is this a switch issue or a fuse issue - and where would I find each item?
Many thanks in advance -
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03-28-2013, 10:14 AM
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CC Member
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Join Date: Sep 2002
Cobra Make, Engine: SPF#0760
Posts: 3,395
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Not Ranked
Gary,
There is a pressure switch on the Master Cylinder that has probably gone away.
Check out NAPA #ECH SL143 for replacement part.
edit: And yes, You can replace it without bleeding the system...
BTW: All this type of info is available on my Wiring Diagrams.
__________________
Wiring Diagrams: SPF MKII, MKIII, GT40, CSX7000, CSX8000, Corvette Grand Sport, and Shelby Sebring, Bondurant & Cinema Tribute Cars.
Owner’s Manuals: SPF MKII, CSX7000, CSX8000, Sebring, Bondurant, & Cinema Tribute Cars.
Large, easy to read and trace schematics with part numbers, wire colors, wire gauge, fuses, and electrical upgrade information. Trouble-shooting and replacement part numbers for those roadside repair adventures.
SPFWiringDiagrams@Comcast.net
Last edited by Blas; 03-28-2013 at 02:46 PM..
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03-28-2013, 10:50 AM
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CC Member
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Join Date: Mar 2008
Cobra Make, Engine: Superformance 428 FE
Posts: 72
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Not Ranked
Hi Gary, I can attest that the wiring diagrams from Blas are indispensable in diagnosing these types of problems. Rick
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03-28-2013, 06:02 PM
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CC Member
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Join Date: Aug 2002
Location: Los Angeles,
CA
Cobra Make, Engine: Superformance #243 - 351W stroked to 418
Posts: 456
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Not Ranked
Thanks guys ... I really appreciate the info.
Cheers - G
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04-11-2013, 03:50 PM
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CC Member
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Join Date: Sep 2002
Cobra Make, Engine: SPF#0760
Posts: 3,395
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Not Ranked
OK, I give up.... Problem Fixed?
__________________
Wiring Diagrams: SPF MKII, MKIII, GT40, CSX7000, CSX8000, Corvette Grand Sport, and Shelby Sebring, Bondurant & Cinema Tribute Cars.
Owner’s Manuals: SPF MKII, CSX7000, CSX8000, Sebring, Bondurant, & Cinema Tribute Cars.
Large, easy to read and trace schematics with part numbers, wire colors, wire gauge, fuses, and electrical upgrade information. Trouble-shooting and replacement part numbers for those roadside repair adventures.
SPFWiringDiagrams@Comcast.net
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04-14-2013, 10:41 PM
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CC Member
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Join Date: Aug 2002
Location: Los Angeles,
CA
Cobra Make, Engine: Superformance #243 - 351W stroked to 418
Posts: 456
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Not Ranked
Sorry - got extremely busy & had to put the Cobra on the back burner for the moment. Will update when I address the problem. Thanks again.
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06-01-2013, 03:19 AM
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CC Member
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Join Date: Jul 2007
Location: Moultonboro,
NH
Cobra Make, Engine: Hi-Tech 427 Comp by Craig Coombe
Posts: 389
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Not Ranked
Blas, I don't know if it worked for Durt....but it worked for me :-)
My brake lights went out last week, and I found this thread. Fortunately, my prototype uses the same part. The only problem was that I didn't have a tool that could get it out! The switch is on the fender side of the master cylinder, and there's not much room. My local engine guy had the right tool, though...so after some contortions and frustrations all is well again.
Thanks as always.....Bill
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06-01-2013, 05:01 AM
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CC Member
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Join Date: Sep 2002
Cobra Make, Engine: SPF#0760
Posts: 3,395
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Not Ranked
Excellent...
As I recall, it's an easy replacement with the body off the chassis 
FYI: With a little thought, you could convert it to a pedal activated switch like on the newer cars. I take it you have your car all back together if you required working brake lights...
__________________
Wiring Diagrams: SPF MKII, MKIII, GT40, CSX7000, CSX8000, Corvette Grand Sport, and Shelby Sebring, Bondurant & Cinema Tribute Cars.
Owner’s Manuals: SPF MKII, CSX7000, CSX8000, Sebring, Bondurant, & Cinema Tribute Cars.
Large, easy to read and trace schematics with part numbers, wire colors, wire gauge, fuses, and electrical upgrade information. Trouble-shooting and replacement part numbers for those roadside repair adventures.
SPFWiringDiagrams@Comcast.net
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06-01-2013, 10:30 AM
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CC Member
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Join Date: Jul 2007
Location: Moultonboro,
NH
Cobra Make, Engine: Hi-Tech 427 Comp by Craig Coombe
Posts: 389
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Not Ranked
Yup....back together....I think the timing needs a minor tweak to get it just right, so that will be done next week. I'm trying to take care of any reliability issues that I can before the Colorado event.
Bill
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06-01-2013, 02:11 PM
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CC Member
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Join Date: Sep 2002
Cobra Make, Engine: SPF#0760
Posts: 3,395
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Not Ranked
Send me some photos if you get a chance. UNless you gallery photos are current.
__________________
Wiring Diagrams: SPF MKII, MKIII, GT40, CSX7000, CSX8000, Corvette Grand Sport, and Shelby Sebring, Bondurant & Cinema Tribute Cars.
Owner’s Manuals: SPF MKII, CSX7000, CSX8000, Sebring, Bondurant, & Cinema Tribute Cars.
Large, easy to read and trace schematics with part numbers, wire colors, wire gauge, fuses, and electrical upgrade information. Trouble-shooting and replacement part numbers for those roadside repair adventures.
SPFWiringDiagrams@Comcast.net
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06-02-2013, 04:13 AM
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CC Member
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Join Date: Jan 2009
Location: Harrison Twp,
MI
Cobra Make, Engine: SPF Coupe #136, 427SR FI
Posts: 300
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Not Ranked
Quote:
Originally Posted by Blas
Excellent...
As I recall, it's an easy replacement with the body off the chassis
FYI: With a little thought, you could convert it to a pedal activated switch like on the newer cars. I take it you have your car all back together if you required working brake lights... |
Blas brings up a good point. My master cylinder mounted switched failed early on and a) it was a bugger to get to and b) at the time no one could tell me if brake fluid would spew all over the car so I went the route of replace with a plunger style which is not impacted by the heat of the headers. Easy to do. Hardest part if configuring a mount.
Jeff |
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