Fia Master Battery Switch With Alternator Protection

[Thrashed]

Hi all

 

After my recent `excitement', fitting an FIA battery isolator just seems like a smart move.

 

I have the attached wiring diagram for the switch, but have a few question I am hoping someone can help with.

 

Just a bit of background on my car. I have a Premium wiring loom which is all standard and run a pinto with a coil with a Accuspark Stealth Blackbox programmable ignition.

 

The easy bit is the big posts which go from the starter solenoid to the battery positive. I can then add a jumper cable between the feed and the W/1 terminal and the other side of that goes to ground with the resistor inline. This I am happy enough with.

 

The bit I am struggling with is the Z/2 terminals. From my ignition switch I have 3 wires, Red (Supply), Black/Yellow (Ignition On) and Black/Blue (starter solenoid). The other side of this Z/2 terminal is to go to the coil plus. At the moment on the coil + I have a Black wire that comes from my Stealth Blackbox, which controls ignition timing etc (basically replaces the Ford ignition amplifier).

 

So, is it as simple as take the black wire from the coil, run to the Z/2 terminal and the other side back down to the coil +?

 

If anyone can help that would be great.

 

Thanks

 

Steve

 

 

 

 

Edited June 1, 2017 by Thrashed

[richyb66]

I put my isolator in the earth lead. My positive terminal is fairly close to earthed metal panels and the top of the battery is handy for storing tools when working under the bonnet. By isolating the earth, I could short the positive terminal to the chassis and it wouldn't cause a problem.

 

Isolator is single pole so won't kill the engine but I've got an inertia switch that cuts power to the ignition and fuel pump that will trip under impact.

[Thrashed]

Thanks guys

 

My battery terminals are both easy enough to get too and both run away from the battery as the main earth is only 6 inches from the starter terminal.

 

As I have the switch and can fit is anywhere. I plan to have it fitted properly so I can cut the engine without damaging the alternator as I have no other `emergency' features to shut of fuel.

 

I did think about fitting an inertia switch but that's just more work, so thought this would serve 2 functions.

 

With my install am I right in thinking just take the coil + to one side and add a lead from the other side back to the coil +?