Dashboard and lights issue

Dear friends,
Please accept my apologies if the issue what i will mention has already been fixed due I could not find after search at all. I have 2008 freelander 2. My another issue is about lights flickering. Headlights, plate lights, interior and dashboard, too. Moreover, speakers work sizzling in winter times. In summer time, dashboard’s screen’ light is getting weak. Have you ever had this issue? Car service says its all about dashboard which should be changed because all the relevant cables are connected. By the way, alternator has been checked (voltage shows 14,1) and conjunctor has been changed. Thank you in advance for your time.

I'd get the alternator checked for AC voltage on its output. It sounds like the output isn't clean DC, which I have seen before. If there's AC coming out the alternator, it will effect LED lights and sound from the audio system, and random other issues too.

Nodge68 said:

I'd get the alternator checked for AC voltage on its output. It sounds like the output isn't clean DC, which I have seen before. If there's AC coming out the alternator, it will effect LED lights and sound from the audio system, and random other issues too.

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Thank you so much for your reply Nodge. Few months ago, the electrician changed attached part, “conjuctor” (this is what he calls, maybe the name is different). Is this the part what you mean?