FIA cut off switch wiring

[andye30m3]

Looking to fit an FIA cut off switch just wondering if there is a guide anywhere.

Think I'll be ok cutting the main feed, but where do people tend to wire in the secondary part of the switch to stop it running off of the alternator?

 

[Rubicon_]

Mines runs from battery to a mega fuse then to the kill switch then to a junction box in the engine bay. It's also wired in to the ignition to kill that when switched.

 

[GrahamS]

I'd also love to know this. Got a couple to put in the cup but haven't found the right pics to show me where to wire into the ignition too.

 

[Rubicon_]

Worst picture ever but mine is in to the ignition like so:

View attachment 25067104316_7b6e117bc3_c.jpgUntitled by Arran Bell, on Flickr

 

[andye30m3]

Cheers for the reply looks exactly like what I'm after

 

[Mini182]

You need to cut power to the ignition/coil when it's turned off.

Also you need to wire a resistor to ground from the alternator side when the switch is turned off to protect the alternator. Needs to be a high power low ohm resistor like a 3 ohm 11w as pictured.

This diagram should help:-


View attachment 020_011.jpg

 

[andye30m3]

Cheers, It was where the best place to cut the ignition that I was after.

On the E36 compact I built most people tended to cut the power to the ECU as that effectively achieved the same same thing

 

[MarkX]

Cheers, It was where the best place to cut the ignition that I was after.

On the E36 compact I built most people tended to cut the power to the ECU as that effectively achieved the same same thing

Coil feed at the ignition switch, pretty easy to do with the cowling removed