Is it true that dashcams and satnavs can't be hardwired on keyless entry cars?

Halfords could not hard wire a dash cam to my Suzuki SX4. I thought that their reply was something you might want to bring to the attention of your readers. They don't hard wire dashcams or satnavs to vehicles with keyless entry because the vehicle electrics are live whenever they're in proximity to the car. An ignition live circuit is not something that can be found within the fuse box as all circuits are controlled by the ECU. As this is the case, wiring into these circuits can cause problems with the canbus systems on board and lead to faults and problems within the vehicle which is costly to repair.

Asked on 21 September 2017 by bournemouthbuddy

Answered by Honest John
That is very useful information. But a screencam can usually be wired unobtrusively by running a cable from the accessories socket under the passenger carpet, then up behind the doorframe trim rubbers to emerge adjacent to the sunviser, then over the sunvisor to the camera. That's how I do it, anyway.
Similar questions
I have a Mio Combo 5207 Navigation with dashcam and was trying to find your review for the newer MiVue Drive 50 LM (Satnav of the Year) to see if an upgrade was appropriate. I can't locate the review....
Suzuki advise that the price for an SD card bearing the latest maps for its built-in SatNav will cost £272. The SatNav maps are likely to be close to a year old since I bought the car secondhand, which...
I've just been given a new Gamin dash cam. Can I run this and my Garmin satnav from the 12V cigarette lighter socket?
Related models
Good value for money. Handles well. Strong and economical 120PS 1.6 petrol engine. SZ4 is very well equipped.
 

Ask Honest John

Value my car