Can someone tell me where this temp wire

[bimmerboy73]

Is supposed to go?

Installing a new AC temp switch as sensor wire (assuming that's what it is) as the old one broke when I installed a new becker a while back.

 

[HB Chris]

Just drill a hole in lower right side of the box facing the passenger and stick into the evaporator. The hole is hidden behind right side squirrel cage fan.

 

[bimmerboy73]

Just drill a hole in lower right side of the box facing the passenger and stick into the evaporator. The hole is hidden behind right side squirrel cage fan.

Thanks. Much appreciated!

 

[Dlc]

this is actually not a wire but the temp sensor probe which needs to be close to your evaporator to sense if it freezes up.
@HB Chris 's instructions are right.

Put the probe into position and test-drive the car running the AC to see if it cycles as expeted - the switch will turn on and off at an interval. You want to have the probe at a spot where it picks up before the evaporator freezes, but you do not want to cycle on/off every minute, so this might require a bit if testing before finding the right position (depth).

Do this before you fix your front plate and console sides.

 

[sfdon]

The thermocouple probe goes correctly into the fins of the evaporator core.
Make sure you hit resistance after it goes through the hole in the plastic box and push it deep into the evaporator core itself. If you were to look inside of your evaporator, you would see that the probe initially was inserted into a copper sheath that went deep into the evaporator core.

 

[mbmw]

The pictures shows where the wire goes towards the evaporator.

 

[Dlc]

The original location of the probe as shown above works well if you go the evaporator box out and only if the intermediate piece does not sit on the box.
When installed, the other option is to drill a hole as @HB Chris suggested:

see this post
https://e9coupe.com/forum/threads/diy-aftermarket-evaporator-installed-in-a-coupe.38112/post-340867
for more details.

 

[HB Chris]

I was able to insert it in the correct hole once, but it took a half hour, long needle nose pliers, and I couldn’t push it far into the fins so in the end not worth the effort.

 

[bimmerboy73]

Thank you to all who responded!. This is all very helpful info. Will make this my next 'to-do'. Unfortunately I had to button everything up before HB responded. Had the center console torn down to solve an issue with my Becker Kurier install ( highly recommend Chrome London BTW if you are looking for a modernized vintage radio for your coupe). I won't be driving it for a few weeks, and it's otherwise 'winter' in Florida...