No, it's a resistor. As Paul says in another post. The 45DE had this
extra resistor. Changed again for the 45DM.
For Rocky, I took a picture. Got the digital camera out of the cabinet,
went out to the car, grabbed by Prospero wiring diagram, popped the
hood/bonnet. Turned on camera. Wouldn't turn on. Dead battery. It annoys
me when people don't take care of the office equipment. Start to go
back. Wait, in my pocket is my Palm Zire. We'll give it a try.
http://horton.iaces.com/~ptroot/resistor.jpg
It's not very good, sorry. It's hard to take a good picture with that thing.
Anyway, the wiring diagram clearly shows, a resistor wire and a ballast
resistor. There are 3 wires going to the stock distributor (this is 45DE
we're talking here. Which is somewhere in the '76-'78 range, US models.
Mine is a '77). 1 from ve- on the coil, 1 from ve+ on the coil through
the ballast wire and 1 through the ballast wire and the ballast
resistor. The resistor was by-passed during cranking to get the car
started.
When you install a pertronix. You don't use any of these wires. The
pertronix has 2 wires coming out (at least mine does, it's the
non-ballasted version). 1 goes to ve+, 1 to ve-.
Paul.
Saabnutty@aol.com wrote:
> Paul,
> I thought that metallic ribbed thingy was something to do with the stock
> electronic ignition installed in the later cars. Although it looks like a
>ballast
> resistor, it isn't. I know I read what it was somewhere or it was addressed
> on the list once before, but now I can't remember. (I will have to check my
> "notes"...) As you pointed out, the ballast resistance is actually provided
>by
> a length of wire in the loom. That would have to be disconnected.
>
> donny v
> 78 MGB
>
> In a message dated 9/28/2004 8:35:33 AM Eastern Daylight Time,
> paul.hunt1@blueyonder.co.uk writes:
> I'm not sure what your ribbed metallic thingy is, unless someone has added
> another ballast resistance at some stage. To check, before you remove the
> points, turn on the ignition and with the points closed measure the voltage
> at the coil +ve and each side of this thing. I'd be interested to know what
> the readings are. Normally I'd expect to see about 6v on the
> white/light-green at the coil +ve under the above conditions.
>
> PaulH.
--
______ Paul T. Root
/ _ \ 1977 MGB
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