Transmissions and Drivetrain Need help with your trans? Problems with your axle?

B&M Mega shifter

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Old Sep 24, 2004 | 11:37 PM
  #1  
83_Camaro_83's Avatar
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From: Calgary
Car: 1987 Z28
Engine: Tree Fiddy (modded)
Transmission: 700R4
B&M Mega shifter

YES I HAVE SEARCHED!!!

heres the question.... i heard the people that have installed their megashifters that they had to goto radioshack and get a relay.....uhhh am i gonna need this???

Im about to buy a megashifter so i just needed to know that
thanx:lala:
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Old Sep 25, 2004 | 06:34 AM
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
yes, you will need a relay for the Park Nuetral Safety switch.
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Old Sep 25, 2004 | 06:53 AM
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From: Bonner Springs, KS
Car: 1995 Corvette
Engine: LT1
Transmission: 6 spd Manual
Axle/Gears: Dana 44, 3:45:1
Actually, the neutral safety switch wires will get connected to one of the microswitches on the shifter (the reverse lights wiring will go to the other little microswitch). You shouldn't need a relay if you don't have EFI. The relay is needed if you have a circuit that tells the computer whether the shifter is in park or not (kind of like the neutral safety switch, but this one is used to raise the idle in park by ~100rpm)..
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Old Sep 25, 2004 | 07:30 AM
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
Originally posted by thirdgen88
Actually, the neutral safety switch wires will get connected to one of the microswitches on the shifter (the reverse lights wiring will go to the other little microswitch). You shouldn't need a relay if you don't have EFI. The relay is needed if you have a circuit that tells the computer whether the shifter is in park or not (kind of like the neutral safety switch, but this one is used to raise the idle in park by ~100rpm)..
I would not connect those wires directly to the micro switch on the B&M, the switch probably won't last too long.
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Old Sep 25, 2004 | 09:41 AM
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83_Camaro_83's Avatar
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From: Calgary
Car: 1987 Z28
Engine: Tree Fiddy (modded)
Transmission: 700R4
why wouldnt it come with it!? and is it hard to do the full install of the shifter and the relay? Gee i thought it was gonna be a simple bolt on but i have heard i have to cut, weld, and a bunch of other stuff....or are people just scaring me!??!
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Old Sep 25, 2004 | 12:18 PM
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
It was a bolt in for us, my B&M was in 3 different cars over the course of 1 year.
I didn't have a chance to use the switches, just used a paperclip in the original shifter harness to bypass the park/neutral switch.
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Old Sep 25, 2004 | 12:35 PM
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From: Chesterfield, Indiana
Car: 1991 Z28 Camaro
Engine: 5.7
Transmission: Jasper 700R4 Stage II
Axle/Gears: 3.23 For Now
I didn't use a relay....works like it did when I had the factory shifter in it....never had any problems...been in there going on a year now....
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Old Sep 25, 2004 | 09:44 PM
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From: Bonner Springs, KS
Car: 1995 Corvette
Engine: LT1
Transmission: 6 spd Manual
Axle/Gears: Dana 44, 3:45:1
Originally posted by Zepher
I would not connect those wires directly to the micro switch on the B&M, the switch probably won't last too long.
You know, I looked at the instructions for the megashifter again (it's been a while since I installed it), and in the text instructions (which I followed originally) it says to connect the purple and yellow wires (the thicker ones) to the lower microswitch, and to connect the reverse light wires (dk. blue and light green) to the upper switch.. However, in the diagram, they show the thicker wires connected to the relay which is switched by the upper microswitch.. I guess I never looked in detail at the diagram and just followed the text instructions... I might have to go in there and change that (can get my idle increase back too); I bet that microswitch isn't rated to handle that current... Its been working so far (quite a long time now), but it seems when that when I notice that something isn't right is when it breaks, lol..

Thanks for the heads up, Z!
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Old Sep 26, 2004 | 05:43 PM
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From: Calgary
Car: 1987 Z28
Engine: Tree Fiddy (modded)
Transmission: 700R4
so 84 custom you just hooked it up to the shifter? but yeah I think im gonna hold up on the shifter 250 $$ canadian so if i want insurance i cant buy it.....cause i still need a new battery......gonna see if my parents will buy me it for x mas thanx for all the help guys
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Old Sep 26, 2004 | 06:24 PM
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From: Chesterfield, Indiana
Car: 1991 Z28 Camaro
Engine: 5.7
Transmission: Jasper 700R4 Stage II
Axle/Gears: 3.23 For Now
Originally posted by 83_Camaro_83
so 84 custom you just hooked it up to the shifter? but yeah I think im gonna hold up on the shifter 250 $$ canadian so if i want insurance i cant buy it.....cause i still need a new battery......gonna see if my parents will buy me it for x mas thanx for all the help guys


"You know, I looked at the instructions for the megashifter again (it's been a while since I installed it), and in the text instructions (which I followed originally) it says to connect the purple and yellow wires (the thicker ones) to the lower microswitch, and to connect the reverse light wires (dk. blue and light green) to the upper switch"

I did it exactly how this was said, works fine...I also fabbed a different bracket to use my factory shifter cable....works awesome too
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