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B&M megashifter

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Old Jul 22, 2004 | 10:18 AM
  #1  
ponykiller1992's Avatar
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From: Ohio
Car: 89 formula 350
Engine: 350 TPI
Transmission: Stock 700r4
B&M megashifter

Ok, before you give me crap about this shifter sucking, back off, lol. I like the way it feels and performs. Anyway, I am having a problem with the wiring. They say to use this 5 amp relay from radio shack. Most people I have heard from have said these tend to blow easily. What relay should I use, and where can I find one. I need to know ASAFP about this. The shifter is in the car, just got to finish the wiring. Thanks in advance.
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Old Jul 22, 2004 | 02:43 PM
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Zepher's Avatar
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
get a 30amp one from radio shack. this is for the P/N safety switch, right?

Did you get the reverse lights working? Do you remember which wires are for the reverse lights?
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Old Jul 22, 2004 | 07:32 PM
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From: Ohio
Car: 89 formula 350
Engine: 350 TPI
Transmission: Stock 700r4
the answer to your reverse light question is...

sorta.

They work, but they stay on in park, nuetrul, and reverse. THey are off in drive and other gears, so it is just an annoyance at this moment.

I think I have solved the relay prob using the relay thet said to use, only downside is the car will start while in gear.
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Old Jul 22, 2004 | 08:58 PM
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
If you wire up the relay correctly, it should only start in park. If you look at the switches on the side of the shifter, you will notice that one is only closed when in park. I haven't wired up my P/N switch yet, I just put a cotter pin in the stock harness connector and put tape over it.
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Old Jul 23, 2004 | 09:17 AM
  #5  
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From: Suffolk VA, Cleveland NY
Car: 84 Berlinetta
Engine: junk 350
Transmission: TH350
Axle/Gears: Moser 4.56
Originally posted by ponykiller1992
They work, but they stay on in park, nuetrul, and reverse. THey are off in drive and other gears, so it is just an annoyance at this moment.
Ponykiller, mine would do the same thing,, it took a little bit of adjusting on the switch for them to function properly. I would recommend having someone outside of the car watching as you adjust the switch, so they can tell you when the lights go out.
Don't know why someone would tell you this shifter is crap, I love mine.
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Old Jul 23, 2004 | 11:34 PM
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From: Ohio
Car: 89 formula 350
Engine: 350 TPI
Transmission: Stock 700r4
Originally posted by Zepher
If you wire up the relay correctly, it should only start in park. If you look at the switches on the side of the shifter, you will notice that one is only closed when in park. I haven't wired up my P/N switch yet, I just put a cotter pin in the stock harness connector and put tape over it.
It is wired to start up in any gear on purpose. I hard wired the NSS with a 25amp inline fuse. The relay B&M suggests is only a 5 amp fuse. I cant justify putting the NSS that needs 10g wires to a 5 amp relay.
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Old Jul 24, 2004 | 02:37 AM
  #7  
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
Originally posted by ponykiller1992
It is wired to start up in any gear on purpose. I hard wired the NSS with a 25amp inline fuse. The relay B&M suggests is only a 5 amp fuse. I cant justify putting the NSS that needs 10g wires to a 5 amp relay.
That is why I mentioned getting a 30amp relay.
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Old Jul 24, 2004 | 09:55 AM
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From: Ohio
Car: 89 formula 350
Engine: 350 TPI
Transmission: Stock 700r4
I couldnt find a 30 amp fuse that had the number of prongs I need
ed. Oh well, this work fine
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Old Jul 24, 2004 | 12:29 PM
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From: Winston salem, NC
Car: 1987 1SICIROC.....1999 TransAm
Engine: 385 HSR.....LS1
Transmission: 700R4 with Midwest 3400 2.4str...M6
Axle/Gears: SLP Zexel Posi unit 3.42's...3.73's
is this what your looking for?
Attached Thumbnails B&M megashifter-dsc00338.jpg  
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Old Jul 24, 2004 | 12:30 PM
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From: Winston salem, NC
Car: 1987 1SICIROC.....1999 TransAm
Engine: 385 HSR.....LS1
Transmission: 700R4 with Midwest 3400 2.4str...M6
Axle/Gears: SLP Zexel Posi unit 3.42's...3.73's
the two prongs that are circled is whats activates the rear lights.
Attached Thumbnails B&M megashifter-dsc00342.jpg  
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Old Jul 24, 2004 | 01:06 PM
  #11  
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
Originally posted by Wishmaster's87IROC
the two prongs that are circled is whats activates the rear lights.
Is it both prongs? I thought one prong was the P/N safety and the other was the reverse.
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Old Jul 24, 2004 | 03:21 PM
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From: Winston salem, NC
Car: 1987 1SICIROC.....1999 TransAm
Engine: 385 HSR.....LS1
Transmission: 700R4 with Midwest 3400 2.4str...M6
Axle/Gears: SLP Zexel Posi unit 3.42's...3.73's
Originally posted by Zepher
Is it both prongs? I thought one prong was the P/N safety and the other was the reverse.

well yeah, you know what I mean...what I meant was thats where you have to look if your reverse lights are staying on when in say, driver or park......one of those prongs is what causes it...I dont remember which one.


SOmetimes my lights are on and I just have to tap the shifter towards the passenger side to disingauge one of those prongs.
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Old Aug 11, 2004 | 01:12 PM
  #13  
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From: Manahawkin/Hackensack, NJ
Car: 1987 IROC-Z
Engine: 305 LB9
Transmission: 5 Speed
Axle/Gears: 3.70 Posi BW 9 Bolt
Whats the part number for the radioshack 25 or 30 amp relay?
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