More sensitive brake pressure switch available?
Thread Starter
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Laughing Gas
Joined: Dec 2014
Posts: 774
Likes: 11
From: Simsbury, Connecticut
More sensitive brake pressure switch available?
Hi folks - My F500 stops way before my pressure switch actually sends a signal to my brake lights. That brake booster really is something. Does anyone have a recommendation for a more sensitive pressure switch, if it exists? I bought mine from Mac's.
As I'm writing this I checked Mac's for the link of the one I bought and found this: Ford - Ford Pickup Truck Brake Light Switch - Modern Lower Pressure Version - Macs Auto Parts
Is this my solution? Sure seems so...
Thanks in advance.
Mr Don't Wanna Be Rear Ended...
As I'm writing this I checked Mac's for the link of the one I bought and found this: Ford - Ford Pickup Truck Brake Light Switch - Modern Lower Pressure Version - Macs Auto Parts
Is this my solution? Sure seems so...
Thanks in advance.
Mr Don't Wanna Be Rear Ended...
Logistics Pro
Joined: Feb 2005
Posts: 3,952
Likes: 117
From: Upper Left Coast
Hi folks - My F500 stops way before my pressure switch actually sends a signal to my brake lights. That brake booster really is something. Does anyone have a recommendation for a more sensitive pressure switch, if it exists? I bought mine from Mac's.
As I'm writing this I checked Mac's for the link of the one I bought and found this: Ford - Ford Pickup Truck Brake Light Switch - Modern Lower Pressure Version - Macs Auto Parts
Is this my solution? Sure seems so...
Thanks in advance.
Mr Don't Wanna Be Rear Ended...
As I'm writing this I checked Mac's for the link of the one I bought and found this: Ford - Ford Pickup Truck Brake Light Switch - Modern Lower Pressure Version - Macs Auto Parts
Is this my solution? Sure seems so...
Thanks in advance.
Mr Don't Wanna Be Rear Ended...
In ANY case, you want to signal brake application to the person following you before you actually stop (or begin slowing down) just like you want to activate your turn signals well before actually turning or changing lanes.
Earlier signaling is always better than late signaling (like signaling while you're changing lanes)
Most newer cars activate the brake lights on pedal movement instead of brake application pressure.
Fleet Owner
Joined: Dec 2000
Posts: 25,378
Likes: 5,387
From: Central PA
I got one from Mid-fifty. I don't remember the price but look it up it was not too much. And my brake lights do come on a lot faster, as soon as I tap the pedal.
Just after I got my back from the body shop in 1999, my son (who was 7 or 8) and I were driving somewhere. I told him my biggest fear was getting rear ended. He said, Gee Dad, I thought your biggest fear was drowning? You see I can't swim and I probably said that once. I said, Well when I am in my truck that is my biggest fear!
Just after I got my back from the body shop in 1999, my son (who was 7 or 8) and I were driving somewhere. I told him my biggest fear was getting rear ended. He said, Gee Dad, I thought your biggest fear was drowning? You see I can't swim and I probably said that once. I said, Well when I am in my truck that is my biggest fear!
Lead Driver
Joined: Aug 2006
Posts: 8,093
Likes: 653
From: Brentwood, TN
This is a first for me...never heard of a situation where a truck the size of an F500 would stop with less brake pressure than would activate the pressure switch. Something sounds fishy, like a blockage or possibly a bad switch.
Thread Starter
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Laughing Gas
Joined: Dec 2014
Posts: 774
Likes: 11
From: Simsbury, Connecticut
Edit: Scratch that. Booster or no booster the brakes would require the same pressure to stop regardless of how hard someone is pushing on the pedal. Hmm.
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Cargo Master
Joined: Aug 2014
Posts: 2,594
Likes: 72
From: North Central Arkansas
I bought my switch from Ron Francis Wiring. It is supposed to take less pressure to activate. It is also supposed to be safe with silicone Dot 5 fluid.
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Fleet Owner
Joined: Dec 2000
Posts: 25,378
Likes: 5,387
From: Central PA
The original stock brake switch is $22.50 at Mid Fifty. The new brake light switch activates the brake light switch with less pressure than the old one.
Fleet Mechanic
Joined: Dec 2005
Posts: 1,603
Likes: 44
This has always puzzled me, as why the switch was on the master cylinder which is
incorrect. Pressure out from the master is very low pressure. The booster is what
amplifies pressure and thats where the switch should be. I have the same problem
with my loader, the loaders master cyl is same as a F8-F900 and same booster. Stop
lights never worked & I have tried many switches none worked. I could tee into the
output line on the booster but I rather put a switch under the dash Napa's got em..
incorrect. Pressure out from the master is very low pressure. The booster is what
amplifies pressure and thats where the switch should be. I have the same problem
with my loader, the loaders master cyl is same as a F8-F900 and same booster. Stop
lights never worked & I have tried many switches none worked. I could tee into the
output line on the booster but I rather put a switch under the dash Napa's got em..
Elder User
Joined: Jun 2015
Posts: 791
Likes: 11
From: Louisville
A mechanical switch is almost always preferable but if hydraulic is used it must be installed after the booster. Also, if a tandem output booster is employed two switches should be installed in parallel.
Lead Driver
Joined: Aug 2006
Posts: 8,093
Likes: 653
From: Brentwood, TN
After doing some more research on these brake systems I can now see where there could be an issue with brake pressure at the switch. I guess that this is one of those instances where Ford had to make a design decision that accommodated various boosters without a need to replumb the brake light circuit each time. Looks like the lower pressure switch is the way to go...stock appearance and no rewiring.
Thread Starter
|
Laughing Gas
Joined: Dec 2014
Posts: 774
Likes: 11
From: Simsbury, Connecticut
This has always puzzled me, as why the switch was on the master cylinder which is
incorrect. Pressure out from the master is very low pressure. The booster is what
amplifies pressure and thats where the switch should be. I have the same problem
with my loader, the loaders master cyl is same as a F8-F900 and same booster. Stop
lights never worked & I have tried many switches none worked. I could tee into the
output line on the booster but I rather put a switch under the dash Napa's got em..
incorrect. Pressure out from the master is very low pressure. The booster is what
amplifies pressure and thats where the switch should be. I have the same problem
with my loader, the loaders master cyl is same as a F8-F900 and same booster. Stop
lights never worked & I have tried many switches none worked. I could tee into the
output line on the booster but I rather put a switch under the dash Napa's got em..
