OBC help please - two things

[orangecurry]

hey kids.

About 15 years ago I bought a 15 button OBC and retrofitted it to the car. It's a chrome bumper 1989 convertible. Everything fitted perfectly, but as it was a pain to get to, I didn't bother fitting the temp sensor.
It does go in the LHS lower front spoiler, where there's a hole, yes?
So as I have some time on my hands, I've taken the front inner-wings and front undertray out, cleaning and so on, so I have easy access.

Anyway, questions...
1) a) for a 1989 chrome 325, where does the feed for the external temp sensor come from on the loom?
Or should it be on the loom-section that I fitted 15 years ago?

b) is this the correct sensor for this car, as it doesn't clip into the hole as I expected.
1-383-204

temp-sens-1s.JPG

2) Again 15 years ago, I found another OBC and loom, and bought it, planning on buying a Touring at some point - I never did. So I have another full loom and kit, but this has a different temp sensor in a duct - what specific model is this for please?

OBCloom-s.JPG

Thanks!

[rix313]

The top picture is the correct sensor and the lower picture showing a sensor in the brake duct is where it is supposed to mount.

[orangecurry]

....but there are no brake ducts on a chrome bumper.

[Brianmoooore]

Temp sensor on an early car points horizontally through a hole in the lower front valance. IIRC, it's a different sensor, with the probe part being considerably greater diameter, with a domed end.

Edit: Just seen the second pic. That looks like it might be the early sensor, pushed into a brake duct, where the sensor in the first pic should be.
Both sensor types are electrically identical.

[biffer]

The temp. sender ( along with the OBC horn) is connected to an extra loom a few feet long, that goes from behind the glovebox,thru the main grommet next to the brake-servo, into the engine-bay and follows the wiring thats already there forward to behind the n/s headlamp, where it drops down into the cavity where temp. sender and OBC horn live.
It's sometimes missing from otherwise complete OBC kits.

[orangecurry]

Thanks both.

How many horns are there for an early car?

Mine seems to have three (I'll go and have another look to make sure)

[biffer]

Sounds right- 2 of them will be the normal horns that lots of cars have, slung underneath each chassis-leg.
Third should be a round mid/high-tone, behind n/s indicator, maybe with a metal cover round it.

[orangecurry]

yes exactly that - you know your horns

So what does the OBC horn look like? And what is it used for? I have the gong.

[Brianmoooore]

OBC horn looks like the normal one on a single horn car, as is used as the theft alarm sounder for the OBC.

[orangecurry]

ohhh right thanks Brian. Hope you and yours are all keeping well.