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Fatboy74
Silverstone


Joined: 19 Aug 2015
Posts: 114
Location: Suffolk


PostPosted: Wed Jun 13, 2018 6:07 pm    Post subject: New headlight lenses required H7 or H4? Help Reply with quote

New to the world of 964(lovin it Very Happy ), so I will probably be posting some daft questions so please bare with me!
Need new headlight lenses and my current ones have H7 on them(93 C4) but when looking I can only seem to find Bosch lettered with H4 on them, could someone please tell me what the difference is and can I just put the H4's on?
Any help would be appreciated thumbsup
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maldren
Imola


Joined: 07 Oct 2016
Posts: 829



PostPosted: Wed Jun 13, 2018 7:47 pm    Post subject: Reply with quote

The simplest answer is that H4 are combined dip and main beam in one bulb, H7 are single filament bulbs, one each for dip and main.
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Mike
2003 996.2 C2 Coupe Arctic Silver
 
  
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Fatboy74
Silverstone


Joined: 19 Aug 2015
Posts: 114
Location: Suffolk


PostPosted: Wed Jun 13, 2018 8:50 pm    Post subject: Reply with quote

Thanks Mike, so I take it the lenses have a different pattern on them due to bulb positions and I can't just swop over the lenses to H4 style?
And I also can't put H4 bulbs in as the wiring/socket will be different in my H7 headlights.
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Fatboy74
Silverstone


Joined: 19 Aug 2015
Posts: 114
Location: Suffolk


PostPosted: Wed Jun 13, 2018 9:13 pm    Post subject: Reply with quote

Just remembered the lights have been changed to HID's and have a dual beam bulb so now I'm thinking H4 lenses would be right Question
My head hurts now Confused
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maldren
Imola


Joined: 07 Oct 2016
Posts: 829



PostPosted: Thu Jun 14, 2018 7:34 am    Post subject: Reply with quote

The bulbs are not interchangeable, their bases are different sizes and, of course, the H4 has an extra terminal (the flat blades) 3 rather than 2.

However, I'm not familiar with 964 light (mines a 996). You may find the lenses are the same.
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2003 996.2 C2 Coupe Arctic Silver
 
  
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ras62
Montreal


Joined: 20 Jan 2012
Posts: 608
Location: Cheshire


PostPosted: Thu Jun 14, 2018 7:50 am    Post subject: Reply with quote

The glass on all 64's are H4 but they come in RHD and LHD forms.
 
  
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Fatboy74
Silverstone


Joined: 19 Aug 2015
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PostPosted: Thu Jun 14, 2018 5:59 pm    Post subject: Reply with quote

Thanks for the input guys👍 I think I've got my head around it now.
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