Does this look right? Wiring behind dash and speedo cable : MGB & GT Forum : MG Experience Forums : The MG Experience

Does this look right? Wiring behind dash and speedo cable #1
NOHOME Peter Plouf London, Canada 1961 Austin-Healey Sprite Bugeye "Lil" 1967 MG MGB GT "Maggie (GT From Hell)"	Posted: April 06, 2012 03:31PM Registered: 6 years ago Posts: 12,134

First of all, to you that think sills and floors are hard, forget it, that suff is easy compared to trim. Thanks to those who responded to my dash plea for help, I have that bit dealt with...moving on...

Take a look at this picture and let me know if it is right. The car is a 1968, and I did not take it apart or I would have pictures.

On all othr cars I have seen, the speedo cable comes out BESIDES the steerign column support. There is no such hole in this car.

I have the harness clipped where it is because the P clip was on the original harness in this aproximate location. The hole in the P clip fits the 5/15" bolt and I don't see any other places to fasten the clip.

Once I get this little bit sorted, I will locate the dash in place in front of the hole, wire it all up and then bolt the dash in place.

Oh, and I would like to make reservations in a special piece of hell for the person who put the grommet for the speedo cable inside the steering column support. That was fun.

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Re: Does this look right? Wiring behind dash and speedo cable #2
darkleaf Leif Jacobsen Goleta, CA, USA 1969 MG MGB GT 2003 Subaru Impreza	Posted: April 06, 2012 03:54PM Registered: 2 years ago Posts: 710

Where's the picture?

Edit: Can see pic now. I have always seen them routed to the right of the steering column support rather than through it like in your picture. Will you be able to connect it to the speedo like that?

Edited 1 time(s). Last edit at 04/06/2012 05:05PM by darkleaf.

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Re: Does this look right? Wiring behind dash and speedo cable #3
NOHOME Peter Plouf London, Canada 1961 Austin-Healey Sprite Bugeye "Lil" 1967 MG MGB GT "Maggie (GT From Hell)"	Posted: April 06, 2012 05:12PM Registered: 6 years ago Posts: 12,134

In reply to # 2033158 by darkleaf Where's the picture?

Edit: Can see pic now. I have always seen them routed to the right of the steering column support rather than through it like in your picture. Will you be able to connect it to the speedo like that?

Leif:

I am with you on the routing. However, the hole is absent on the 68. I may have to route the cable out the side of the column support.

Trying to get this cleared so that I can start wiring the dash. Is there any chance the cable harness goes through the column support rather than over the top like in the picture?

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Re: Does this look right? Wiring behind dash and speedo cable #4
darkleaf Leif Jacobsen Goleta, CA, USA 1969 MG MGB GT 2003 Subaru Impreza	Posted: April 06, 2012 05:24PM Registered: 2 years ago Posts: 710

Yes, I would suggest routing it through that hole in the side. I seem to recall doing that on my car, but not sure how it is really supposed to be done.

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Re: Does this look right? Wiring behind dash and speedo cable #5
NOHOME Peter Plouf London, Canada 1961 Austin-Healey Sprite Bugeye "Lil" 1967 MG MGB GT "Maggie (GT From Hell)"	Posted: April 06, 2012 05:33PM Registered: 6 years ago Posts: 12,134

In reply to # 2033231 by darkleaf Yes, I would suggest routing it through that hole in the side. I seem to recall doing that on my car, but not sure how it is really supposed to be done.

The speedo cable, or the harness? Or both!?

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Re: Does this look right? Wiring behind dash and speedo cable #6
darkleaf Leif Jacobsen Goleta, CA, USA 1969 MG MGB GT 2003 Subaru Impreza	Posted: April 06, 2012 05:36PM Registered: 2 years ago Posts: 710

Both. Routing the harness through there will give a bit more room when connecting the wiring for the gauges.

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Re: Does this look right? Wiring behind dash and speedo cable #7
mgbanthony Anthony Henderson Gananoque, Ontario, Canada 1962 MG MGB 1962 MG MGB 1970 MG MGB GT 1974 MG MGB 1991 GMC Sierra 1500 → more	Posted: April 06, 2012 05:49PM Registered: 7 years ago Posts: 2,923

Doesn't the 68 have an L adaptor on the speedo so that the cable comes in from the right side of the column? The cable should come through under the hood hinge as I recall it.

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Re: Does this look right? Wiring behind dash and speedo cable #8
darkleaf Leif Jacobsen Goleta, CA, USA 1969 MG MGB GT 2003 Subaru Impreza	Posted: April 06, 2012 06:03PM Registered: 2 years ago Posts: 710

In reply to # 2033252 by mgbanthony Doesn't the 68 have an L adaptor on the speedo so that the cable comes in from the right side of the column? The cable should come through under the hood hinge as I recall it.

I don't think I have one on my speedo, just the one at the transmission. However, Moss catalog suggests that 68-71 cars should have it. Now I'm curious. Peter, does your speedo have an angle drive on the back?

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Re: Does this look right? Wiring behind dash and speedo cable #9
NOHOME Peter Plouf London, Canada 1961 Austin-Healey Sprite Bugeye "Lil" 1967 MG MGB GT "Maggie (GT From Hell)"	Posted: April 06, 2012 06:17PM Registered: 6 years ago Posts: 12,134

All I know is that 68 seems to have been one messed up year of the MG Factory!

The speedo cable has to enter via the hole in the support. I will route it out the side of the support.

Unless I can find out otherwise, I am leaving the harness clipped as shown.

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Re: Does this look right? Wiring behind dash and speedo cable #10
balloonfoot Lloyd Faust New Mexico, USA 1964 Porsche 356C "SOLD ! !" 1967 MG MGB "MAX" 1985 Chevrolet Corvette "EASY 1ST" 1986 Chevrolet Corvette "Gas Mileage Special" 1989 Chevrolet Camaro ""I Rock""	Posted: April 06, 2012 06:28PM Registered: 4 years ago Posts: 8,407

Peter....the harness goes up against the firewall, above the vent door, behind the defrost hose and is clipped to the wiper assy, originally with metal clips but use zip ties. It goes thru the column support and stays out of the way of the dash.

Do you have the angle drive for the rear of the speedo? If so, route the cable up thru the tunnel on pass side (you'll see a hole there). If not, the get long cable and route it thru the hole below the hood hinge on the drivers side.

“Better to remain silent and be thought a fool than to speak out and remove all doubt”.
- Abraham Lincoln

"Anyone with an intense emotional interest in a subject loses the ability to observe it objectively: You selectively perceive events. You ignore data and facts that disagree with your main philosophy. Even your memory works to fool you, as you selectively retain what you believe in, and subtly mask any memories that might conflict."

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Re: Does this look right? Wiring behind dash and speedo cable #11
jaws Bud Jaworski Ohio, USA	Posted: April 06, 2012 06:32PM Registered: 3 years ago Posts: 259

Don't know if I can offer much help but I have a 69 with a right angle adapter on my speedo.

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Re: Does this look right? Wiring behind dash and speedo cable #12
NOHOME Peter Plouf London, Canada 1961 Austin-Healey Sprite Bugeye "Lil" 1967 MG MGB GT "Maggie (GT From Hell)"	Posted: April 06, 2012 06:40PM Registered: 6 years ago Posts: 12,134

Lloyd:

No angle drive in the pile of bits. If it is the same as the one on the transmission, I should have a spare or ten kicking around. Never thought to look for a hole in the tunnel.

I wonder if that might be part of the reson that the speedo was jumping around before the owner took it apart?

Still need to find where the choke cable routes out of the cockpit. I have to wonder if the hole at the bottom of the column support is where the choke cable is going to want to exit?

If I haave to mess with the grommet at the bottomof that support one more time, I am going to turn to strong drink!

OH wait, already did that. Might have to take up cussing.

In french

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Re: Does this look right? Wiring behind dash and speedo cable #13
balloonfoot Lloyd Faust New Mexico, USA 1964 Porsche 356C "SOLD ! !" 1967 MG MGB "MAX" 1985 Chevrolet Corvette "EASY 1ST" 1986 Chevrolet Corvette "Gas Mileage Special" 1989 Chevrolet Camaro ""I Rock""	Posted: April 06, 2012 06:43PM Registered: 4 years ago Posts: 8,407

In reply to # 2033299 by jaws Don't know if I can offer much help but I have a 69 with a right angle adapter on my speedo.

Bud....never seen one like that....not MGB OEM

“Better to remain silent and be thought a fool than to speak out and remove all doubt”.
- Abraham Lincoln

"Anyone with an intense emotional interest in a subject loses the ability to observe it objectively: You selectively perceive events. You ignore data and facts that disagree with your main philosophy. Even your memory works to fool you, as you selectively retain what you believe in, and subtly mask any memories that might conflict."

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Re: Does this look right? Wiring behind dash and speedo cable #14
bobmunch Bob Muenchausen PC, Oregon, USA 1968 MG MGB GT "Traveler"	Posted: April 07, 2012 09:49AM Registered: 14 years ago Posts: 11,573

Typical 68 version of right angle drive at speedo (top) and how it fits at the speedo (bottom).

And those who were seen dancing were thought to be insane by those who could not hear the music.
Nietzsche

A PDF copy of The British Leyland Emissions Control Manual may be found here:
https://www.dropbox.com/s/dgjgbxszv1h22hy/MG%20EMISSIONS%20MANUAL.pdf

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Re: Does this look right? Wiring behind dash and speedo cable #15
bpaquette Bob Paquette Grand Prairie, TX, USA 1969 MG MGB	Posted: April 07, 2012 10:53AM Registered: 3 years ago Posts: 609

Peter,

Please post some pictures when you get this sorted out. I went out to look at my car and now you've got me wondering about where all of the cables go. I'm going to go through my disassembly pictures and see if there are any clues. If I find anything I post them. As you know mine is an early 69 that seems to be very close to yours. I am fairly certian that I don't have a right angle drive on my speedo.

Bob

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Re: Does this look right? Wiring behind dash and speedo cable #16
bpaquette Bob Paquette Grand Prairie, TX, USA 1969 MG MGB	Posted: April 07, 2012 11:10AM Registered: 3 years ago Posts: 609

In reply to # 2033309 by NOHOME Lloyd:

No angle drive in the pile of bits. If it is the same as the one on the transmission, I should have a spare or ten kicking around. Never thought to look for a hole in the tunnel.

I wonder if that might be part of the reson that the speedo was jumping around before the owner took it apart?

Still need to find where the choke cable routes out of the cockpit. I have to wonder if the hole at the bottom of the column support is where the choke cable is going to want to exit?

If I haave to mess with the grommet at the bottomof that support one more time, I am going to turn to strong drink!

OH wait, already did that. Might have to take up cussing.

In french

I think you are correct about the choke cable exiting the cockpit through the hole at the bottom of the steering column. I found this picture of mine before I pulled the engine. It's not very clear but when I zoom in you can see the cable going through this hole. I'm still unclear about the spedo cable.

Bob

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Re: Does this look right? Wiring behind dash and speedo cable #17
bobmunch Bob Muenchausen PC, Oregon, USA 1968 MG MGB GT "Traveler"	Posted: April 07, 2012 11:58AM Registered: 14 years ago Posts: 11,573

Maybe this will help. this is on a 68GT and is the only place where any speedo cable has come thru on this or the 69 GT parts car I had. Lloyd may know better, I just know what I inherited with these two cars. The cable passes in front of the heater face and over to the speedo, and I am fairly sure that this was why they used a right angle drive - to avoid a sharp bend of the cable at the rear of the speedo.

And those who were seen dancing were thought to be insane by those who could not hear the music.
Nietzsche

A PDF copy of The British Leyland Emissions Control Manual may be found here:
https://www.dropbox.com/s/dgjgbxszv1h22hy/MG%20EMISSIONS%20MANUAL.pdf

Edited 1 time(s). Last edit at 04/07/2012 12:00PM by bobmunch.

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