New Member RX-7 Technical Post your first technical questions here, in an easy flame free environment, before jumping into the main technical sections.

Brake lights not working

Old 11-28-08, 12:35 PM
  #1  
"81 RX-7
Thread Starter
 
JoeyMazda's Avatar
 
Join Date: Nov 2008
Location: Easton,PA
Posts: 324
Likes: 0
Received 0 Likes on 0 Posts
PA Brake lights not working

I have an 81 rx-7. Taillights work but when I step on the brake they don't come on. It's not the bolts or the brake switch,both are good. Any suggestions? Thanks in advance.
Old 11-28-08, 01:58 PM
  #2  
Engine, Not Motor

iTrader: (1)
 
Aaron Cake's Avatar
 
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 110 Likes on 93 Posts
Check the fuse.

Do you have 12V at the brake switch to ground?
Old 11-28-08, 06:45 PM
  #3  
"81 RX-7
Thread Starter
 
JoeyMazda's Avatar
 
Join Date: Nov 2008
Location: Easton,PA
Posts: 324
Likes: 0
Received 0 Likes on 0 Posts
Not the fuse either,I checked it
Old 11-28-08, 11:13 PM
  #4  
Retired Moderator, RIP

iTrader: (142)
 
misterstyx69's Avatar
 
Join Date: Sep 2005
Location: Smiths Falls.(near Ottawa!.Mapquest IT!)
Posts: 25,581
Likes: 0
Received 131 Likes on 114 Posts
check the harness for the lights at the back of the car,behind the Rear carpetting.You could have a Bad harness.Did you check the bulbs or the Sockets?
Old 11-28-08, 11:28 PM
  #5  
"81 RX-7
Thread Starter
 
JoeyMazda's Avatar
 
Join Date: Nov 2008
Location: Easton,PA
Posts: 324
Likes: 0
Received 0 Likes on 0 Posts
Thanks for the suggestions but I checked it already and its good. I also checked the bolts, the fuse, brake switch,the groung is good. I'm still troubleshooting through everything. Hope to find it soon so I don't get stopped.
Old 11-29-08, 10:38 AM
  #6  
Engine, Not Motor

iTrader: (1)
 
Aaron Cake's Avatar
 
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 110 Likes on 93 Posts
OK. The '81 pulls power for the taillights directly from the battery via the white/red wire if my schematic is correct. Thus if you have no 12V at the 15A fuse or at the switch, then there is a break in the wire. The horn is on the same circuit. Does it work?
Old 11-29-08, 12:39 PM
  #7  
"81 RX-7
Thread Starter
 
JoeyMazda's Avatar
 
Join Date: Nov 2008
Location: Easton,PA
Posts: 324
Likes: 0
Received 0 Likes on 0 Posts
My horn is working. I took care of the problem temporarily by running an extra wire from the brake switch to the main brake taillight wire. I still have to get to the bottom of this because now the brake light on the dash is on.
Old 11-29-08, 02:14 PM
  #8  
Junior Member
 
norfy's Avatar
 
Join Date: Nov 2008
Location: uk
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
gotta be a broken wire then
Old 11-29-08, 09:51 PM
  #9  
"81 RX-7
Thread Starter
 
JoeyMazda's Avatar
 
Join Date: Nov 2008
Location: Easton,PA
Posts: 324
Likes: 0
Received 0 Likes on 0 Posts
After troubleshooting for a few hours I finally figured it out. It was the brake light switch relay.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
fastsaab
New Member RX-7 Technical
5
08-19-15 11:42 AM
Frisky Arab
2nd Generation Specific (1986-1992)
13
08-18-15 05:30 PM


Thread Tools
Search this Thread
Quick Reply: Brake lights not working



All times are GMT -5. The time now is 07:04 AM.