Posted 06 December 2018 - 03:50 PM
Anyone know where relay k104 for the battery backup system is physically on the car. Can hear it clicking but can’t find it!!
Posted 06 December 2018 - 04:47 PM
Stick your head in the boot with a flashlight.
Loot at your left, above the wheelarch part.
You should see a black plastic coverplate.
Under that is where the relays are located.
Posted 06 December 2018 - 05:02 PM
Posted 06 December 2018 - 05:07 PM
Could you stick your head (upside down) in the footwell and see.
I know there are 2 black relays there for an NA. Maybe the tubby with battery backup has 3 there.
Posted 06 December 2018 - 05:18 PM
Edited by lidzvx, 06 December 2018 - 05:19 PM.
Posted 06 December 2018 - 05:22 PM
Upside down in the OSF footwell is where you will find relay K104 (on the Turbo).
Posted 06 December 2018 - 05:39 PM
Trying to work out why with a new backup battery the relay now clicks but the central locking doesn’t operate. But works fine on the main battery.
My thoughts are a bad relay or bad wiring to it. As it’s quite a simple circuit.
Anyone have any more pointers?
Posted 06 December 2018 - 06:07 PM
The relay K104 can get a bit crusty and develop a high resistance across its terminals. Mine became so bad I had 13 volts one side, and 10 volts on its output. This dropped even further when trying to operate the locking system. Perhaps try removing the relay and operating at a few times to clean the contacts up a bit as it gets so little use... Worked for me
Posted 06 December 2018 - 06:14 PM
They're also mounted upside down in the most unnecessary position, because of this, the relays were "superglued" in, (kid you not). Not sure if this was my special treat, or if they're all like this! Go easy under there, as the wiper delay relay lives there too. Its quite easy to knock its lid off and ruin it, if using big nasty plastic levers to remove. lol
Posted 06 December 2018 - 06:17 PM
Posted 06 December 2018 - 06:20 PM
Thanks for the tip about the wiper delay though 👍🏻
Posted 06 December 2018 - 06:32 PM
That way we can easier compare it to the na.
Posted 06 December 2018 - 08:24 PM
I have quite a few images, although need to find a good image host (free!)
Posted 06 December 2018 - 11:06 PM
Yes, Battery relay, Wiper delay and Flasher relay all live here. All black. Thanks for the image link
Posted 07 December 2018 - 07:06 PM
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