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Tips on removing dash mounted ignition switch?

PostPosted: Wed Oct 07, 2020 12:11 am
by tdskip
Looks very tight in there, never thought the backside of a MGB dashboard was spacious until now!

I did search, but most of the discussions were about dealing with the switch once removed.

Thanks!

Re: Tips on removing dash mounted ignition switch?

PostPosted: Wed Oct 07, 2020 4:08 pm
by Rob_LaMoreaux
On my '69 you just turn the ring nut on it. There are 2 flats I put a large needle nose plier on and turn. They also make small tools for this type of nut.
Then it pops out the back.

Rob

Re: Tips on removing dash mounted ignition switch?

PostPosted: Wed Oct 07, 2020 8:59 pm
by RichardHawkins
Tdskip,

As Rob said, my car is a 1968 Elan, I made a special tool, which sounds impressive but is just a small piece of sheet steel, 16 gauge I think, with a notch cut in it, so that it engages with both slots of the ring nut that Rob described. The ring nut unscrewed quite easily, the switch fits into a D shaped hole in the board which stops the switch from turning as the ring nut is undone.

Hope this helps,

Richard Hawkins

Re: Tips on removing dash mounted ignition switch?

PostPosted: Wed Oct 07, 2020 9:49 pm
by draenog
Moss also sells a tool: https://www.moss-europe.co.uk/switch-bezel-tool-384-960.html. Although as RIchard says it's easy to make one yourself.

Re: Tips on removing dash mounted ignition switch?

PostPosted: Wed Oct 07, 2020 9:56 pm
by draenog
Here's the US Moss link https://mossmotors.com/bezel-remover-tool-set, although at $34 I doubt they get many takers :shock:

Re: Tips on removing dash mounted ignition switch?

PostPosted: Wed Oct 07, 2020 10:16 pm
by pharriso
draenog wrote:Here's the US Moss link https://mossmotors.com/bezel-remover-tool-set, although at $34 I doubt they get many takers :shock:


I have one fashioned from a 1" piece of copper plumbing pipe... :roll:

Re: Tips on removing dash mounted ignition switch?

PostPosted: Thu Oct 08, 2020 1:03 pm
by RogerFrench
I find it easier on the S3 to remove the washer/ wiper switch first.

Re: Tips on removing dash mounted ignition switch?

PostPosted: Thu Oct 08, 2020 6:22 pm
by billwill
RogerFrench wrote:I find it easier on the S3 to remove the washer/ wiper switch first.


I also find it helps if you remove the ashtray, as it is then easier to fiddle with the wires on the back of the ignition switch.

Remember some of those wires are permanently LIVE, no fuses, so it is best, indeed mandatory, to disconnect the battery in the boot before you begin.

Re: Tips on removing dash mounted ignition switch?

PostPosted: Thu Oct 08, 2020 6:24 pm
by billwill
RogerFrench wrote:I find it easier on the S3 to remove the washer/ wiper switch first.


I think that only applies to LH drive cars.

Re: Tips on removing dash mounted ignition switch?

PostPosted: Thu Oct 08, 2020 9:55 pm
by tdskip
Thanks for the responses gentlemen, especially about not electrocuting myself!

Battery disconnected on any under-dash work, yes.

Re: Tips on removing dash mounted ignition switch?

PostPosted: Fri Oct 09, 2020 12:05 pm
by billwill
tdskip wrote:Thanks for the responses gentlemen, especially about not electrocuting myself!

Battery disconnected on any under-dash work, yes.


Oh, I don't think you would electrocute yourself with just 12 volts, but the risk of starting a fire is horrendous.

Re: Tips on removing dash mounted ignition switch?

PostPosted: Fri Oct 09, 2020 2:57 pm
by USA64
billwill wrote:Oh, I don't think you would electrocute yourself with just 12 volts, but the risk of starting a fire is horrendous.


I think it's amps not volts that kill you, the battery has a lot of amps. I have a wrench with pits at the ends from being dropped across the battery terminals, 12 volts, lots of amps. Raise your hand if you've been shocked by the plug wire, 20,000 volts, no amps.

Re: Tips on removing dash mounted ignition switch?

PostPosted: Fri Oct 09, 2020 3:53 pm
by tdskip
I will have the battery totally disconnected.

Something is blocking the switch from being pushed back and out, need to figure that out. Likely just some fiddly things to deal with.

Re: Tips on removing dash mounted ignition switch?

PostPosted: Fri Oct 09, 2020 4:08 pm
by tdskip
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Up and back worked...

Thanks!

Re: Tips on removing dash mounted ignition switch?

PostPosted: Fri Oct 09, 2020 8:56 pm
by billwill
USA64 wrote:
billwill wrote:Oh, I don't think you would electrocute yourself with just 12 volts, but the risk of starting a fire is horrendous.


I think it's amps not volts that kill you, the battery has a lot of amps. I have a wrench with pits at the ends from being dropped across the battery terminals, 12 volts, lots of amps. Raise your hand if you've been shocked by the plug wire, 20,000 volts, no amps.



Believe me, I've a B.Sc in Electrical Engineering. :D

Yes it is the total wattage hence the combination of volts and amps that kills you but there has to be enough volts to overcome the normal resistance of the human body and 12 volts isn't enough to do that.