wireing up brake switch for tcc
#1
TECH Apprentice
Thread Starter
iTrader: (9)
Join Date: Jan 2007
Location: york pa
Posts: 354
Likes: 0
Received 0 Likes
on
0 Posts
wireing up brake switch for tcc
anyone have a wireing chart for a brake switch and relay set up. i have a wire off my stand alone harness for tcc i think its called that i was told the best way to do that is to use a relay thanks mike
#3
TECH Apprentice
Thread Starter
iTrader: (9)
Join Date: Jan 2007
Location: york pa
Posts: 354
Likes: 0
Received 0 Likes
on
0 Posts
problem is my stock miata brake switch works like a nitrous botton when its pushed it supplys power to lights, i was told some how i could wire in a relay so it can also take power away from the tcc wire but still remain a normal brake switch ???
#4
11 Second Club
iTrader: (12)
Join Date: Nov 2005
Location: Ottawa, KS
Posts: 402
Likes: 0
Received 0 Likes
on
0 Posts
I'm about ready to get a brake switch w/cruise for a mid 70's chevy truck. It will have two switches in it. One is NO and one is NC. One for the brake and one for the cruise. Use the NC (cruise side) for the TCC signal.
Trending Topics
#12
TECH Fanatic
iTrader: (7)
http://www.700r4.com/tech/tcc/relay_.../diagram.shtml
Use either diagram but instead of hooking it up to the trans, the wire goes to the PCM blue connector pin 33 (purple wire).
Use either diagram but instead of hooking it up to the trans, the wire goes to the PCM blue connector pin 33 (purple wire).
#16
a normal 5 pin relay has 2 outputs.. 85/86 switch the relay on. 30 gets switched to 87 or 87a.
87a is connected to 30 normally (Normally Connected, aka NC)
87 is connected to 30 ONLY when 85/86 are energized.. (Normally Open, aka NO)
the key thing is 87a becomes UNCONNECTED when 85/86 are energized..
so 87a and 87 toggle.
SO, you connect 87a to pin 33 of the PCM. so power is supplied ALL THE TIME, EXCEPT when the brake is applied (85/86 are energized), then it is disconnected.
the rest is up to the PCM..
now, in my case, I will NOT have a PCM controlled tranny (700r4), so I have to wire it (87a on the relay) to the wire on the tranny directly (like the bowtie overdrives drawing)
Sam
#17
11 Second Club
iTrader: (88)
12v Ignition to the Switch on one wire, the other to Blue 33. The PCM needs that 12v Signal from the Brake Pedal to lock the Convertor. Step on the Brake, signal off.
Like mentioned with the Relay, 85 is ground, 86 is off of the 12v Brake Wire going to the lights, 30 is 12v Ignition in, 87a is to the Blue 33 on the PCM. Step on the Brakes, 12v goes to the lights, energizes the Relay, stops the 12v to the PCM and Convertor.
#18
TECH Addict
iTrader: (22)
You left out the TAN/BLK wire from R42 and your converter still locks up? I find that hard to believe since it directly controls the lock up solenoid
http://www.lt1swap.com/pictures/16_a...amp_switch.gif
http://www.lt1swap.com/pictures/16_a...amp_switch.gif
#20
12 Second Club
iTrader: (23)
Join Date: May 2007
Location: San Antonio, TX
Posts: 652
Likes: 0
Received 0 Likes
on
0 Posts
If you are using the standard 4L60e tranny harness, then u only need one wire to tell the PCM when u are stepping on the brake.. blue connector, pin 33.
a normal 5 pin relay has 2 outputs.. 85/86 switch the relay on. 30 gets switched to 87 or 87a.
87a is connected to 30 normally (Normally Connected, aka NC)
87 is connected to 30 ONLY when 85/86 are energized.. (Normally Open, aka NO)
the key thing is 87a becomes UNCONNECTED when 85/86 are energized..
so 87a and 87 toggle.
SO, you connect 87a to pin 33 of the PCM. so power is supplied ALL THE TIME, EXCEPT when the brake is applied (85/86 are energized), then it is disconnected.
the rest is up to the PCM..
now, in my case, I will NOT have a PCM controlled tranny (700r4), so I have to wire it (87a on the relay) to the wire on the tranny directly (like the bowtie overdrives drawing)
Sam
a normal 5 pin relay has 2 outputs.. 85/86 switch the relay on. 30 gets switched to 87 or 87a.
87a is connected to 30 normally (Normally Connected, aka NC)
87 is connected to 30 ONLY when 85/86 are energized.. (Normally Open, aka NO)
the key thing is 87a becomes UNCONNECTED when 85/86 are energized..
so 87a and 87 toggle.
SO, you connect 87a to pin 33 of the PCM. so power is supplied ALL THE TIME, EXCEPT when the brake is applied (85/86 are energized), then it is disconnected.
the rest is up to the PCM..
now, in my case, I will NOT have a PCM controlled tranny (700r4), so I have to wire it (87a on the relay) to the wire on the tranny directly (like the bowtie overdrives drawing)
Sam
I only have Blue 33 pinned on my S10 and I have no issues.
12v Ignition to the Switch on one wire, the other to Blue 33. The PCM needs that 12v Signal from the Brake Pedal to lock the Convertor. Step on the Brake, signal off.
Like mentioned with the Relay, 85 is ground, 86 is off of the 12v Brake Wire going to the lights, 30 is 12v Ignition in, 87a is to the Blue 33 on the PCM. Step on the Brakes, 12v goes to the lights, energizes the Relay, stops the 12v to the PCM and Convertor.
12v Ignition to the Switch on one wire, the other to Blue 33. The PCM needs that 12v Signal from the Brake Pedal to lock the Convertor. Step on the Brake, signal off.
Like mentioned with the Relay, 85 is ground, 86 is off of the 12v Brake Wire going to the lights, 30 is 12v Ignition in, 87a is to the Blue 33 on the PCM. Step on the Brakes, 12v goes to the lights, energizes the Relay, stops the 12v to the PCM and Convertor.
You left out the TAN/BLK wire from R42 and your converter still locks up? I find that hard to believe since it directly controls the lock up solenoid
http://www.lt1swap.com/pictures/16_a...amp_switch.gif
http://www.lt1swap.com/pictures/16_a...amp_switch.gif