Inertia switch missing

[Stocky]

Sorry, more questions from a new Stag owner!

Just noticed that the inertia switch is missing; completely overlooked that when I inspected the car.
The car has Lumenition ignition and there are wires going to the ignition module that arise from the loom under the wiper motor, see picture. Are these the wires that would have gone to the inetia switch?? I assume it would be wise to resinstate the switch.
Also, there is a spare connector for something arising from the loom in the same area; see second picture. What is this for?
Thanks,
Ross

IMG_0441 (Small).JPGIMG_0440 (Small).JPG

[paulbell6]

Hi Ross, can't help you with the first point but the connector in the second picture fits onto the PDWA valve, the brake bias valve, where all the brake pipes are connected to.

Paul

[73stagman]

Looks like they are the wires that should be n the inertia switch. There would be a white wire and a light green / white wire (on a standard mk 2 loom I think). the other is as Paul says the PDWA brake circuit check wire. (If it detects a brake pressure loss it lights a bright red light on your dash marked "BRAKES"!)

[Stocky]

Thanks chaps.
The wires to the Luminition module are white and white/green. If I reinstate the inertia switch, how should I do this and maintain the connection to the Luminition (electrics are the devil's work as far as I am concerned!)?

[73stagman]

As standard the inertia switch should only be connected to the fuel pump. I guess there is no issue with using the inertia switch to supply the feed to the lumenition as well but I would wait till anybody else has anything else to say!

[Goldstar]

My Lumenition is wired from the inertia switch +ve. I assume for convenience as its a nearby easy accessible source. I have read a fair number of posts suggesting using the inertia +ve to connect various items. Pretty sure mine has a double spade connector rather than bodging the wire in somewhere.

Paul

[V Mad]

You can connect the Lumenition to either side of the switch it will work OK.

[Bob Heritage]

Ross, The inertia has 2 terminals, 1 is live feed & 1 is switched to the pump. If you open up the tape where your cables are joined you will probably find they are piggybacked together. It is a simple 2 terminal switch.

[Stocky]

OK, thanks guys, I'll add it to my growing To Do list.
Ross

[DJT]

You can connect the Lumenition to either side of the switch it will work OK.

But if you fit it 'downside' of the switch then the ignition will cut out immediately in the event of a shunt rather than the engine running on until the carbs run dry or someone (hopefully the driver) switches it off.

[V Mad]

I would have thought that was safer Dave.

[DJT]

I would have thought that was safer Dave.

So do I Chris. It's how I have been running Lumenition for years............

[KOY 23]

I would have thought that was safer Dave.

Providing your inertia switch is 100%. I would hate to lose power due to intermittent switch. You will not notice if the pump stops for a few seconds as there is enough fuel in the float chambers to mask any intermittent supply.

John

[martin]

Hi Ross, just a couple of thoughts, as Chris implies, both inertia switch contacts are positive, one being constant, the other, switched. You must have this fitted ! If you have a shunt (God forbid) and the insurance assessor discovers it's missing, they will not pay out ! It's a critical component. You're certainly not the only one. Martin.