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 9Likes
07-03-2018, 05:12 PM
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CC Member
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Join Date: Jun 2006
Location: wellington,
oh
Cobra Make, Engine: BDR #260 w/ 347 stroker, Canfield 195 cc heads, prosystems carb on a VicJr, Comp roller cam
Posts: 225
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Not Ranked
yep...old thread...butt, looks like it still an issue. I had the same issue...them cheap azz hydraulic/electric these switches failed on Fords back in the 60's, and are still failing today. Way to much heat under the hood for them to work for long, IMHO. changed mine to a mechanically operated switch of the brake pedal 10 years ago...and never had another problem. 
__________________
BDR#260...21.6K miles logged as of 4/2018 
www.motorheadsohio.com We are an engine machine shop, specializing in crankshafts!
47 years of doing business an going strong! stop on by for a personal tour of the shop
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07-04-2018, 11:12 PM
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CC Member
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Join Date: Apr 2005
Location: Tucson,
AZ
Cobra Make, Engine:
Posts: 5,391
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Not Ranked
The problem I've run into on a couple cars is the use of higher pressure switches that need 60-120 pounds of pressure. Cobras are light cars and don't usually require that much pressure. There are low pressure switches made that engage at around 20-25 psi and work much better in cars like this. Ron Francis sells one but there are other places that sell them as well. Just check the pressure range of the switch before buying.
Larry
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Alba gu brąth
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07-05-2018, 07:00 AM
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CC Member
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Join Date: Nov 2015
Posts: 171
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Not Ranked
Quote:
Originally Posted by LMH
The problem I've run into on a couple cars is the use of higher pressure switches that need 60-120 pounds of pressure. Cobras are light cars and don't usually require that much pressure. There are low pressure switches made that engage at around 20-25 psi and work much better in cars like this. Ron Francis sells one but there are other places that sell them as well. Just check the pressure range of the switch before buying.
Larry
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Had the same issue. The Ron Francis switch works very well on my car. |
11-24-2019, 04:42 PM
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CC Member
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Join Date: Feb 2010
Location: Honolulu HI, East Haddam, CT, Middletown,
HI
Cobra Make, Engine: BDR #656 402 SR TW
Posts: 179
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Not Ranked
Should I swap pressure switch if it is activating my lower lights on brighter intensity but nothing on my upper lights?
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11-24-2019, 08:09 PM
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CC Member
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Join Date: Dec 2015
Posts: 1,442
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Not Ranked
Quote:
Originally Posted by pjmoore2003
Should I swap pressure switch if it is activating my lower lights on brighter intensity but nothing on my upper lights?
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Your upper lights should be your turn signal lights and are not affected by brakes or running lights. |
11-27-2019, 06:45 AM
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CC Member
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Join Date: Dec 2017
Location: Harrison,
AR
Cobra Make, Engine: BDR, 418
Posts: 175
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Not Ranked
Brake lights out...
Quote:
Originally Posted by Red Era
I had the same problem on my ERA. It has a switch that works off of the brake fluid pressure ( located on the master cylinders). Replaced the switch and everything was fine.
Good luck
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Exactly .... I was in a "safety inspection" at the Mid-America Nationals and my brakes took a puke.... replaced the switch located under the master cylinder and that was the issue ... there's so much heat coming from the headers, things tend to not last as long under the hood. |
11-29-2019, 06:37 PM
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CC Member
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Join Date: Dec 2018
Location: Houston,
TX
Cobra Make, Engine:
Posts: 20
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Not Ranked
Brake switch
That just made my day!! Ingenious!!
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11-29-2019, 11:39 PM
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CC Member
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Join Date: May 2008
Location: Brisbane,
QLD
Cobra Make, Engine:
Posts: 2,797
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Not Ranked
Quote:
Originally Posted by tamanaco
yep...old thread...butt, looks like it still an issue. I had the same issue...them cheap azz hydraulic/electric these switches failed on Fords back in the 60's, and are still failing today. Way to much heat under the hood for them to work for long, IMHO. changed mine to a mechanically operated switch of the brake pedal 10 years ago...and never had another problem. |
This is the way to go.
Can be set at any point you wish to trigger the lights, unlike a pressure switch.
Gary |
12-03-2019, 07:40 PM
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CC Member
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Join Date: May 2003
Location: Hudson Valley NY,
NY
Cobra Make, Engine: Backdraft, 302, Tremec 3550. #038
Posts: 863
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Not Ranked
Came across my old thread (haven't been on in over a year) and glad to see its still helping some owners. I can say that the fix I did over 15 years ago is still working just as good as the day I put it in. (just checked it)
SWITCH and come on over to the other side... its worth it. 
Never did post pictures though, still can if someone needs em. Don't know if the pedal setup is still the same since mine is an older car.
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Kids in the backseats cause accidents, accidents in the backseat causes kids ! Good reason to get a Cobra !!!
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