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Author
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Topic: gearbox
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seikemo
Journeyman Posts: 29
From: Norway
Registered: Jul 2005
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posted 08-12-2005 10:38 AM
 
Hi,I have a manual gearbox, RUG BJ1 on my 73 Mach1. One of the problems is that the back light lights no matter what gear it's in. Only when it's in neautral the light is switched off. I have chequed the switch itself and it's ok. So it is something wrong with the operatind system inside the gearbox.. Any tips for this?
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Bob429
Gearhead Posts: 545
From: Watervliet,MI,USA
Registered: Jun 99
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posted 08-13-2005 10:41 PM
I would venture to guess that it's not in the gearbox. IT's more than likely in the wiring possibly in the plastic part where the switch makes contact or a crossed wire (2 melted together)------------------
Bob
Member#39
71 J code
429 SCJ-R Sportsroof
C6 4:11
http://www.my429scj.50megs.com
http://www.mustangsandmore.50megs.com/MembersPics/Bob429.html
2004 Pure stock muscle car Drags pics now on my page. [This message has been edited by Bob429 (edited 08-13-2005).]
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Scott H
Gearhead Posts: 1480
From: Chicago area
Registered: Mar 2005
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posted 08-13-2005 11:43 PM
If I recall, the back-up switch is mounted externally on the shifter, so it would have nothing to do with the internals of the transmission gearbox. Usually the switch consists of a plunger that is actuated when one of the shifter rods moves against it, closing the contacts.
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seikemo
Journeyman Posts: 29
From: Norway
Registered: Jul 2005
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posted 08-15-2005 03:36 PM
Please look at the picture on this web site:http://www.bildeinfo.com/Mine%20mustanger.htm A: is a hole in the "gearbox wall" where the switch is placed. Inside the wall is a piston which moves up and operate the switch. B: are 2 holes for the screws, the socket for the switch. Inside these 2 holes there's also a spring. Anyone who have seen this system before?
What are the two springs for?
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gjz30075
Gearhead Posts: 105
From: Roswell, Ga.
Registered: Apr 2004
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posted 08-15-2005 04:35 PM
That's the strangest setup I've ever seen, unless its a European setup, but I doubt it. I would take the switch off the lever and make certain the backup lights work by simply touching the two wires, and they should not work if the wires don't touch. Then get an external switch, which is normally mounted back by the shifter itself and actuated by the backside of one of the shifter arms pushing in a plunger on the switch. I don't know how easy it is to get the switch over there but any Mustang vendor here usually has them.
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seikemo
Journeyman Posts: 29
From: Norway
Registered: Jul 2005
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posted 08-15-2005 04:41 PM
..thanks a lot...I'll cheque this tomorrow...
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427Fastback
Gearhead Posts: 530
From: N.Vancouver.B.C
Registered: Jan 2005
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posted 08-15-2005 04:53 PM
I have a RUG-BJ1 here that is the same.The springs (and detent pins) are part of the shifter rail detents.These trans are a little different than the early ones,they have the more detents and the external switch...
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