Stop Light Switch

Replacing the 3rd stop light switch in 2 years. Anybody else having this issue?

 

Is it the hydraulic switch in the brake line?

 

It's a hydraulic switch that mounts on the front end of the MC.

 

i was having to replace mine about everyear on my 1960 jeep pick up.they would either hang up by staying on or not work at all.the last one i put on has lasted for a few years.must of been a bad batch of switches is all i can figure out.but i did get the last one at napa instead of auto zone.

 

This one just quit working all together. The last would only come on if you stood on the pedal.

At least they're easy to change and are fairly cheap.

 

I've always thought this an odd set up.

M

 

same problem here. Best I can tell, they are all junk. If anyone knows of a good dependable brand, I'd like to here about it. I've been thinking about changing mine over to the lever type switch that is actuated by the pedal.

 

I just came across this one. It claims to be better engineered and kick on at a lower line pressure. Looks interesting. $26

http://www.parts123.com/parts123/yb.dll?userwatch~partnumstring~cadehkja~SW-32

 

i just bought a low pressure switch made by painless from summit racing for 16.00. i also have one on order from a vendor on ebay ,that one was 8.00. i hope to install the painless one on sunday after t.s. barry passes.i also have to stand on the pedal to get my brake lights to come on

 

Would an air bubble at the switch inlet cause that problem? Seems to me like it might.

 

its possible there might be air in the system. i never had a problem until i did the disc brake swap and went to the two pound residual valve. i have been running my lights off my front switch i may try the rear switch before i change the front just to see if it works different, i still like the idea of the lights comming on sooner though, which is what the low pressure switch should do.

 

Just replaced it with a new one from Standard, $14. hopefully I'll this one will last.

 

Standard is (was?) a quality product. I'd suspect that quality was the problem with the others. Napa should be good quality too.

 

This is typical:

 

Those are two brands I've tried. Standard and NAPA. they work great at first. but fail within a year. either no brake lights at all or have to stand on the pedal. I cut one apart, the contacts are what seems to bad, I might try the Ron Francis low preasure switch. I,ve had good luck with some of their other products.

 

If the contacts go bad, you may be putting more current through them than they are designed for. Anything non-stock about your electrical system?

You could easily add a relay (ie Bosch, Parts Express, ca $5) to take the load off of the switch.

 

installed the low pressure switch from painless wiring today,rebled front brakes. my brake lights now come on with a light touch on the pedal. my old switch may have been bad as it was 10 years old, the painless switch fit with my factory wires,the one i got off ebay had a different connector.