ambient temp sensor ?'s

[JHahn22@xxxxxxx]

Hello again everyone,
Thanks to reply's from previous inquiries on the digest, I have discovered 
that the reason my obc says its -22F degrees outside is because I don't have 
a temp sensor in my front spoiler.  After looking into this I have traced 
down the appropriate wires and they have been cut, and it looks like the %$&* 
mechanic (using that term loosely) cut the wiring harness above the 
connector.  They want almost $60 for this doo-dad at the dealership, but I've 
yet to source on-line places yet.  The question is, do I need to replace the 
harness as well, or can I just solder the new one into the harness?  I 
suspect that the computer is very sensitive to the resistance in this 
circuit, and if I shorten or lengthen the wires from stock, I won't get an 
accurate reading when I'm done.  Any guesses?  Anybody have an extra one for 
cheap?
This is for a car with a production date of 6/88.  It was a 325i originally, 
but has the 'is' spoiler now.
On the same thread,  the obc alarm horn's wires were also cut, but I still 
have that part bolted to the car.  So I tried re-connecting the appropriate 
wires, and getting the alarm to go off,  all I got was the sound of a relay 
clicking underneath the steering column.  I intead to chase down the relay 
eventually, but is there anywhere else I should be looking?  Not a big 
concern really, but I would like it to work if it will for cheap.
Thanks in advance,
Jake Hahn
89 325i(is?)

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