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 I am not an expert on 70 AMX brakes.....but this 
may be more than just a warning switch.  Does the car have disc/drum 
brakes? If so it may be a combination valve.    A combination 
valve could contain a proportioning valve/metering valve and a pressure 
differential valve.   
for some additional info. 
  
No clue if you can move the valves by hand or not, 
or how much they really move.  
  ----- Original Message -----  
  
  
  Sent: Tuesday, January 10, 2006 10:15 
  PM 
  Subject: 70 amx brake warning 
switch 
  
  
  Hi all looking for some more help on my 
  neighbor's ' 70 AMX. On the passenger side firewall is a brass block, 4 brake 
  lines go in and it has a switch and two plugs at opposite ends shaped like a H 
  . I believe it's to let you know if you lose front or rear brakes. I removed 
  it (we're changing all the lines and hoses) and took out the plugs on the 
  sides to clean it out. There is a pin (horizontal) that I believe should move. 
  If it doesn't move is this thing wasted? 
 
 
 
 
  
 
 
 
 
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