Im looking to install a killswitch to the car to eliminate to prevent flooding and to eliminate the need to get out of the car to pull the egi fuse out when it floods.



I've searched this forum and others and can not find a clear answer on which wire to cut into.



I have an 87 NA, I have a 25a switch, the appropiate female connectors, 16 gauage wire and butt conncetors, see photo below.



From what I've found I cut into the middle black and white wire in the black box with the yellow base underneath the steering coulmn towards the passenger side.



I looked at the mazda manual and I think its the open circut relay or the fuel relay.



Im just looking for a clear answer from somebody who has this installed on the car, Thank you.

nother

On my ae I just cut out the fuel pump. Seemed to work ok, but breaking the connection to the EGI would work quite well, however I don't know the which wire. Any chance you could trace the wire back from the egi fuse?

I'll see if I can follow it.

Just cut the wire coming from the egi fuse. That should do it.