![]() | Home > Technical (L322) > Tow ball turned on in CCF |
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Happydaze Member Since: 30 Aug 2021 Location: Wirral Posts: 77 ![]() ![]() ![]() |
I'm wondering what wiring you have. I fitted an original towbar and wiring to my 2007 tdv8 and the electrics were totally plug and play, no IID tool required. The wiring had a gizmo box in it. Trailer light on the dash comes on automatically when the trailer wiring is plugged in. I have no idea how aftermarket wiring might work.
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beulahgigFFRR Member Since: 15 Feb 2024 Location: Norwich Posts: 11 ![]() ![]() ![]() |
Thanks, I have the whole plug and play package which includes the Siemens unit. It's wired to a 13 pin socket. I will next see if the connectors are live or not.
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Scouse Exile Member Since: 09 Dec 2022 Location: East Midlands Posts: 394 ![]() ![]() ![]() |
Hi,
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Scouse Exile Member Since: 09 Dec 2022 Location: East Midlands Posts: 394 ![]() ![]() ![]() |
Sorry posted twice |
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beulahgigFFRR Member Since: 15 Feb 2024 Location: Norwich Posts: 11 ![]() ![]() ![]() |
Hi Jon, ive just compared and my box is identical, it came from a L322 2005 Vogue model.
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Scouse Exile Member Since: 09 Dec 2022 Location: East Midlands Posts: 394 ![]() ![]() ![]() |
Hi Stuart,
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beulahgigFFRR Member Since: 15 Feb 2024 Location: Norwich Posts: 11 ![]() ![]() ![]() |
Hi Jon, i just had a quick chat with a local tow bar guy, he said to check that they are not LED's on the trailer board...they are not...then check the Siemens/BMW box. I also read that a poor earth at the 13 pin connector could cause all the issues, so had that apart and all seems good.
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Scouse Exile Member Since: 09 Dec 2022 Location: East Midlands Posts: 394 ![]() ![]() ![]() |
Ok that's interesting as I had it connected to an "amazon" trailer test tool that displays an LED for each function selected (Reverse, turn right, left, hazards etc etc) but it wouldn't show the correct indicator for each function. Basically so you know it works before hooking up.
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beulahgigFFRR Member Since: 15 Feb 2024 Location: Norwich Posts: 11 ![]() ![]() ![]() |
Ok |
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douglasgdmw Member Since: 21 Jun 2023 Location: Ayrshire Posts: 28 ![]() ![]() |
Also check there is no corrosion in your tow socket.
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beulahgigFFRR Member Since: 15 Feb 2024 Location: Norwich Posts: 11 ![]() ![]() ![]() |
So Jon, some news in that i went out and got a 2nd hand set up (see pics) towing loom. in pretty good shape after a clean. Took the original one out, and then inserted in the new, plugged in my tester (like your tester) and all is good. I then hooked up the trailer. This has been driving me nuts for weeks, not being able to solve the problem.
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beulahgigFFRR Member Since: 15 Feb 2024 Location: Norwich Posts: 11 ![]() ![]() ![]() |
Thank you ![]() |
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Scouse Exile Member Since: 09 Dec 2022 Location: East Midlands Posts: 394 ![]() ![]() ![]() |
Hi Stuart, Thanks for the update, good info. Just to clarify is the white Siemens control box the same part number in the “new” part or different to the previous one? I suppose you just sourced one on eBay or whatever? Jon |
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beulahgigFFRR Member Since: 15 Feb 2024 Location: Norwich Posts: 11 ![]() ![]() ![]() |
Hi Jon, yes, same number.
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