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Old 12th May 2019, 13:59   #1
Sjonnie
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Default Unable to find switched live in under bonnet fuse box :(

I am trying to find a "switched live" in the under bonnet fuse box of my ZT-T 190+ MK2 but have been unsuccessful.


I need the switched live/ignition live to feed a DVR (dash cam) at the back of my tourer. If you have ever drove your car in The Netherlands you should understand the need for it


I have a feed running from the engine compartment to the back of the car. Earth is taken at the back of the car from the bracket that holds one of the sound system modules.


Searching this forum I found a number of threads that indicate fuse 4 as the fuse that is switched. It did look that way. When I first put my multi meter on fuse 4 it showed no voltage so I piggy bagged the fuse and connected the dash cam. After turning the key to acc or ignition the dash cam turned on. Progress I thought But after removing the key the power stayed on and the dash cam would not switch off. I waited for about 3 minutes. Again using my multi meter it seems that all fuses have power. I tried fuses 1, 2 and 3 with the same result.


I must be doing something wrong but I can't figure out what that is


A picture of the fuse box and the (not-connected) piggy bag fuse holder:





Which fuse should I be using?
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Rover 75 2.5 Manual MK2 MY 05 Starlight Silver - Miss March 2022 / Miss May 2023
MG F 1.8i MK2 MY 00 in Anthracite

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Dearly missed: ꝉ ꝉ MG ZT 190+ MK2 MY 04 in Black Olive #8/8 R.I.P. - Miss February 2016

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If it don't fit use a hammer

Last edited by Sjonnie; 12th May 2019 at 14:01.. Reason: Forgot the question ;-)
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Old 12th May 2019, 14:21   #2
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You are correct with fuse 4 ( second one dpown on the right as you look at your photo) but whilst diesels cut the power after around 15 seconds it appears on the V6 petrol models it is live for around 5 to 10 mins after removing the ign key.
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Old 12th May 2019, 14:29   #3
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(Hurrying to his ZT-T to connect the wire to fuse 4)


Thanks! I will try and let you know! 5 to 10 minutes... what were they thinking?
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Rover 75 2.5 Manual MK2 MY 05 Starlight Silver - Miss March 2022 / Miss May 2023
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MG ZT-T 190+ MK2 MY 05 Xpower Grey (sold) - Mr Cover page 2021
Dearly missed: ꝉ ꝉ MG ZT 190+ MK2 MY 04 in Black Olive #8/8 R.I.P. - Miss February 2016

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If it don't fit use a hammer
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Old 12th May 2019, 14:29   #4
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The 1.8's Fuse 4 remains powered for exactly 5min after ignition off, so I'd guess all petrol models do.

Several parts of the system are the same. The overheat/heat soak cooling fan for example.

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Old 12th May 2019, 14:35   #5
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Quote:
Originally Posted by Sjonnie View Post
(Hurrying to his ZT-T to connect the wire to fuse 4)


Thanks! I will try and let you know! 5 to 10 minutes... what were they thinking?
Tic Toc Tic Toc
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Old 12th May 2019, 14:35   #6
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I forgot about the cooling fan. So they were thinking and thinking right


Still two to eight minutes to see if the dash cam switches off
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Rover 75 2.5 Manual MK2 MY 05 Starlight Silver - Miss March 2022 / Miss May 2023
MG F 1.8i MK2 MY 00 in Anthracite

MG ZT-T 190+ MK2 MY 05 Xpower Grey (sold) - Mr Cover page 2021
Dearly missed: ꝉ ꝉ MG ZT 190+ MK2 MY 04 in Black Olive #8/8 R.I.P. - Miss February 2016

Quote:
If it don't fit use a hammer

Last edited by Sjonnie; 12th May 2019 at 14:37.. Reason: typo
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Old 12th May 2019, 14:40   #7
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Around 5 minutes it is! Dash cam switched off so fuse 4 is the fuse to use.


Thanks Dave and TC!
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Sjonnie




Rover 75 2.5 Manual MK2 MY 05 Starlight Silver - Miss March 2022 / Miss May 2023
MG F 1.8i MK2 MY 00 in Anthracite

MG ZT-T 190+ MK2 MY 05 Xpower Grey (sold) - Mr Cover page 2021
Dearly missed: ꝉ ꝉ MG ZT 190+ MK2 MY 04 in Black Olive #8/8 R.I.P. - Miss February 2016

Quote:
If it don't fit use a hammer
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Old 12th May 2019, 14:46   #8
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When I had drl's I used the alternator wire, instant off/on
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Old 12th May 2019, 14:56   #9
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Quote:
Originally Posted by suzublu View Post
When I had drl's I used the alternator wire, instant off/on

As it so happens I am planning to install DRL's next weekend. I was planning on connecting them to the same fuse as the dash cam but having my DRL's on 5 minutes after I turn off the car is not very appealing. So I'd be more than curious which wire you used (as in colour and location ).
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Greetz,

Sjonnie




Rover 75 2.5 Manual MK2 MY 05 Starlight Silver - Miss March 2022 / Miss May 2023
MG F 1.8i MK2 MY 00 in Anthracite

MG ZT-T 190+ MK2 MY 05 Xpower Grey (sold) - Mr Cover page 2021
Dearly missed: ꝉ ꝉ MG ZT 190+ MK2 MY 04 in Black Olive #8/8 R.I.P. - Miss February 2016

Quote:
If it don't fit use a hammer
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Old 12th May 2019, 15:22   #10
suzublu
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Quote:
Originally Posted by Sjonnie View Post
As it so happens I am planning to install DRL's next weekend. I was planning on connecting them to the same fuse as the dash cam but having my DRL's on 5 minutes after I turn off the car is not very appealing. So I'd be more than curious which wire you used (as in colour and location ).
Green wire from this bunch iirc?
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