neutral safty switch
Thread Starter
Instructor
Joined: May 2006
Posts: 131
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From: seattle wa
neutral safty switch
ok got diogram for my b&m megashifter and hooked everything up and wouldn't start......... if anyone knows the correct wireing placment please let me know what i have is 6 wires a/b/c/d/e/f/ a is blk/wht . b is orng/blk. c is drk blu. d is lt grn . e is grn/wht 10ga (diogram says it's purple) f is yellow/wht 10ga. anyhow hooked everything up the way it showed to the relay i got from radio shack part number 275-206. and nothing. am i missing something?
Melting Slicks
Joined: Aug 1999
Posts: 2,240
Likes: 42
From: Baltimore, MD USA
A Blue/White Wire goes to ground
B Orange/Black Wire goes to ECM and Hatch release button in the console.
When shifter is in Park or Neutral A is shorted to B. The console hatch release button when pressed now has a path to ground.
A ground signal is also placed on the ECM indicating the shifter is in Park or Neutral.
C Dark Blue 12 volts
D Light Green wire goes to reverse light bulbs.
When shifter is in Reverse C and D wires are shorted together providing 12 volts to the backup bulbs..
E Green/White 12 volts when ignition switch is in start.
F Purple Wire goes to starter solenoid.
When shifter is in Park or Neutral wires at E and F are shorted together providing 12 volts to the starter solenoid.
You said the wire on F is not Purple. So in your case what ever the color of the wire is, it is shorted to E when the shifter is in Park or Neutral.
To verify, just make sure the trans is in Park. Short the two wires together and the starter should engage when you turn the ignition switch to start.
I looked at the schematics for the shifter. I don't see any mention of using a relay. They show two switches that comes with the shifter. One for the Backup lamps and the other for the Neutral safety switch.
Can you post a schematic of the circuit you're using or explain how the relay you hooked up is supposed to work?
B Orange/Black Wire goes to ECM and Hatch release button in the console.
When shifter is in Park or Neutral A is shorted to B. The console hatch release button when pressed now has a path to ground.
A ground signal is also placed on the ECM indicating the shifter is in Park or Neutral.
C Dark Blue 12 volts
D Light Green wire goes to reverse light bulbs.
When shifter is in Reverse C and D wires are shorted together providing 12 volts to the backup bulbs..
E Green/White 12 volts when ignition switch is in start.
F Purple Wire goes to starter solenoid.
When shifter is in Park or Neutral wires at E and F are shorted together providing 12 volts to the starter solenoid.
You said the wire on F is not Purple. So in your case what ever the color of the wire is, it is shorted to E when the shifter is in Park or Neutral.
To verify, just make sure the trans is in Park. Short the two wires together and the starter should engage when you turn the ignition switch to start.
I looked at the schematics for the shifter. I don't see any mention of using a relay. They show two switches that comes with the shifter. One for the Backup lamps and the other for the Neutral safety switch.
Can you post a schematic of the circuit you're using or explain how the relay you hooked up is supposed to work?
Last edited by Hooked on Vettes; Jun 5, 2007 at 05:16 AM.
Thread Starter
Instructor
Joined: May 2006
Posts: 131
Likes: 0
From: seattle wa
well i fixed so stupid, last night i was hooking up wires and had a small spark yeh i know aparently blew backup light fuse well the neutral safty and the back up switch piggy back off each other so when blew back up fuse it wouldn't start i even looked at the fuse but not good enough but it works just fine i love it. so now have to find something else to do to car
