I've just got myself a t5 mission running a zx12r and the fi light is on ! I'm seeing online apparently there's a wire that can be used for self diagnostics does anybody know anything about this location and so on thanks

It is a yellow wire with a female bullet terminal on if memory serves me right. In my loom it was associated with the dash wiring. You need to ground it, and then then switch the ignition in. The light will flash with a series of long and short flashes which is the code. I cant recall where I found the meaning of the codes, but no doubt Google will know.

I'm pretty sure I've found the right wire but no luck light just stays on but to be honest I'm not actually that concerned about it as there been so much changed aftermarket pump no sender loads of the loom not used I would actually expect some kinna light on but the car wasn't running properly but I've found out the problem with that now so probs just stick the tape back over it as it was when I got it lol