found an unplugged wire... what is it?

[thebutcher37]

I was in my engine bay messing with my ICV.. when i opened up my engine harness cover and found a wire unplugged ... But what is it?






A close up of the connection




Sorry for the pics being so big:x

[5Toes]

I see finger printzz!

[AndrewBird]

That is the service indicator reset light wire. Should lead to the diagnostic connector.

[T La]

is this an m42?

[thebutcher37]

OH SNAP..

Yes this is an M42 engined e30..... Forgot to mention...

If its for the service lights... why have they been on, i could be wrong i will check... but i could swear they light up...

[T La]

http://www.m42club.com/forums/showthread.php?t=7757

? could this be it?

[T La]

if you don't experience the " hot start problem" than this is probably the wire that is supposed to be disconnected

[e30nub]

If it's for the M42 its for the catalytic converter. If your car is equipped with one then you should leave it unplugged. If not, do the latter. I believe this was for euro cars.

PIC for reference:


Hey you're in P-town! Is that as in Petaluma? I'm in Rohnert Park!

EDIT: MOTHER F-ERS BEAT ME TO IT! /\

[AndrewBird]

OH SNAP..

Yes this is an M42 engined e30..... Forgot to mention...

If its for the service lights... why have they been on, i could be wrong i will check... but i could swear they light up...

It is the RESET wire for the service lights. If you power this wire, it resets the lights. I'm going off the ETK and the color of the wire. It's not the cat wire as that wire is black/white. Your wire is white/blue.

[thebutcher37]

if you don't experience the " hot start problem" than this is probably the wire that is supposed to be disconnected

Yeah im going to disconnect it... oddly my car has been having cold start problems... lately having a bad idle and shutting off.. I thought it was my ICV but noticed this unplugged, so i plugged it in... Ive since cleaned my ICV with Braklean and i still have a shitty idle.. i will unplug and see if this is why... I will also spray some WD-40 because i now realize I didnt do this...

If it's for the M42 its for the catalytic converter. If your car is equipped with one then you should leave it unplugged. If not, do the latter. I believe this was for euro cars.

Hey you're in P-town! Is that as in Petaluma? I'm in Rohnert Park!

EDIT: MOTHER F-ERS BEAT ME TO IT! /\

AHAHA I still thank you man, but Im actually in L.A. Pico Rivera... IDK why I put P-town when i had registered..LOL my bad fakin the front...

It is the RESET wire for the service lights. If you power this wire, it resets the lights. I'm going off the ETK and the color of the wire. It's not the cat wire as that wire is black/white. Your wire is white/blue.

I dont think this is for the service lights... after looking at the wire It does look black and white to me.. not white and blue.... plus my service lights are working... and have been now that i actually think about it... thanks for the observation though...