Hi George,

The LS-1 coil has internal electronics so that it only needs a logic
signal to trigger it. It's also called an igniter.  All 4 leads are
used.

Signal GND (EC2)
Engine GND
12 V
Trigger

Bob W.


On Tue, 13 Sep 2005 07:23:44 +1000
"George Lendich" <lendich@optusnet.com.au> wrote:

> Mark,
> Good suggestions, never thought of that.
> I went to a auto supply specialist the other day and he told me that the wiring is only + ve and - ve ( two wires) and in fact some coils ( in Australia) have non-plug type connections ( thread and lock nut).
> Does Tracy use the LS 1 coils for any particular reason i.e.because there much lighter or something like that. I'm led to believe they are very reliable and they don't stock them because there is little to no demand for non-genuine replacement - so that's good info. They are found in the GM V8 here in Australia but the cost is about $150 from GMH ( your GMC)
>
> Also can someone explain the wiring of the injectors, I didn't ask about that.
> George ( down under)
>   ----- Original Message -----
>   From: Mark R Steitle
>   To: Rotary motors in aircraft
>   Sent: Monday, September 12, 2005 10:30 PM
>   Subject: [FlyRotary] Re: Ignition Coil Connectors
>
>
>   Joe & Dale,
>
>   Just a bit of caution here.  I'm using the D581 (Chevy pickkup version) coils.  I ordered what looked to be the correct connectors, only to find out that they had an indexing lug that prevented them from mating with the coils.  I trimmed the indexing lug off and used them anyway as there is a lock that prevents them from being inserted 180* out.  Just be sure you check it very carefully.  Connectors cost as much as the coils.  Go figure!  You can always do what Tracy did and solder wires to the pins on the coils, then pot the plug hole.  Then use one large connector on the whole bundle.  
>
>    
>
>   Mark S.
>
>    
>
>
> ------------------------------------------------------------------------------
>
>   From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Kelly Troyer
>   Sent: Monday, September 12, 2005 12:40 AM
>   To: Rotary motors in aircraft
>   Subject: [FlyRotary] Re: Ignition Coil Connectors
>
>    
>
>   Joe and Dale,
>
>          Correct numbers are D580 and D581........Electrically the same.......D581 is slightly
>
>   smaller and has plug and elect. connector opposite ends.......D580 has both plug and
>
>   elect. connector on same end.........Bob White is trying to source connectors for the
>
>    D581.......He has connectors for D580 now........
>
>   --
>   Kelly Troyer
>   Dyke Delta/13B/RD1C/EC2
>
>
>
>
>      
>
>     -------------- Original message from Dale Rogers <dale.r@cox.net>: --------------
>
>
>     > Joe,
>     >
>     > Why did you choose the D851? I thought that the "standard"
>     > was the D580 (AKA: GM # 12558948).
>     >
>     > Dale R.
>     >
>     >
>     > > From: Joe Ewen
>     > > Date: 2005/09/11 Sun PM 10:43:17 EDT
>     > > To: "Rotary motors in aircraft"
>     > > Subject: [FlyRotary] Ignition Coil Connectors
>     > >
>     > > Does anyone know a source and or part number on connectors that will fit the
>     > Delco D851 coils. I tried the Waytek parts called out on the Wiki, but they do
>     > not fit the D851.
>     > >
>     > > Thanks,
>     > > Joe
>     > >
>     >
>     >
>     > --
>     > Homepage: http://www.flyrotary.com/
>     > Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/
>


--
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