MX5Ireland

Fitted a CAT bypass pipe yesterday amd wondering what to do with the sensor wire????????

The after-cat sensor ?
Remove the sensor and tape the wires up away from harm, it's not needed any more.

Thanks Frank, was wondering what that sensor is for if its not needed???

It's like a fuse - when the cat overheats, the sensor melts and that causes a lamp to light up on the dash. Removing the sensor leaves the circuit open, and light extinguished. It's just a lamp too, not connected to the ECU (on MK1s)

Hmm.. so what could the spare wiring + lamp be used for.. ?
Low fuel, fog light, "lights on", alarm warning light, knock sensor.. ?

Hmm.. wonder if you could get the alarm warning led in there..


Aha!

Thanks lads, yeah my mind boggles with all the uses it may serve.