[Mg-mmm] ignition switch re-visited

[Tom Metcalf]

Sarah,

Just to clarify, a P-Type typically used a brown Rotax switch with OFF D 
S H being the 4 positions. The back would be marked with P.L.C.5 (not 
2).  Spade key.

tommm



On 8/11/2011 1:30 PM, Lew Palmer wrote:
> The following is a comment from Tom Metcalf who knows as much about Triple-M
> authenticity as anyone I know. And even he isn't completely sure:
> ============
> You're right about the window but I didn't delve into that one because of
> typical variations. I use black Lucas 4 position on J's (OFF D S H) and
> brown Rotax on P/N's with same markings. I do think MAYBE some were
> summer/winter or low/high, but truthfully I really think those were TA era.
> PLC 2 sounds right without looking it up.
>
> But basically, I think the 2 positions of OFF D allowed the dynamo to either
> be OFF or ON, whereas the TA charging system allowed a LOW and HIGH charge.
>
> No expert but that's my take based on what I've seen.
>
> Also, why would MG use Lucas on earlier cars, and Rotax on later P's and
> N's? Best guess is Lucas ended up with tons of brown Rotax PLC's after Rotax
> and CAVwere consumed by Lucas, hence ending up with that kool little 3 spoke
> steering wheel looking logo for the combined companies.
> ==========
> -----Original Message-----
> From: mg-mmm-bounces at autox.team.net [mailto:mg-mmm-bounces at autox.team.net]
> On Behalf Of Carr&Edwards
> Sent: Thursday, August 11, 2011 11:21 AM
> To: Listserve Triple-M
> Subject: [Mg-mmm] ignition switch re-visited
>
> Here's a fine state of affairs!  Two people who certainly should know their
> MMM's have different opinions on whether this switch is correct for PA0935:
>
> FP series key
>          window shows "1  2  side  head"  [I omitted the 4th position on my
> original post,
>               so that part of Lew's comment is irrelevant]
>          "Lucas" stamped into face (not printed on)
>          7 wiring connectors on the back:  F2/D/F1  [top];  L/T/A/H  [bottom]
>
> Lew Palmer says "no" :
>      The PLC2 is the right model, however, the switch should have FOUR
> positions
> and no window. The positions are "Low" or "Summer", "High" or "Winter",
> "Side" and "Head". This assumes use of the original cutout/fusebox. F1 and
> F2 positions lead to the cutout from whence there is a lead to the field
> coil of the dynamo.
>
> Jerry Felper says "yes":
>      The 1,2, side, head is the proper switch for the PA.
>
>
> Does anyone else want to venture an opinion on this???  (I think I remember
> seeing a no-window, "Low/High" with my SA parts, but they're long gone).
>
>
> Sarah Carr
> PA0935 in Penna.
> _______________________________________________
>
> Mg-mmm at autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation  $11.47
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/mg-mmm/lpalmer@roundaboutmanor.com
> _______________________________________________
>
> Mg-mmm at autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation  $11.47
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage: http://autox.team.net/mailman/options/mg-mmm/mgtom@zoominternet.net