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T3 headlight relay modification???

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scottbot53 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote scottbot53 Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 12 at 16:56
there is a post on samba.com about this with photo's and a detailed description of how to do this 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Griff71 Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 12 at 20:40
Just done this on my doka and makes huge difference.  Simple job too.  Used the how to off the samba.com.Smile
89 Doka (EJ25 conversion)Sold
71 Bug (1955cc twin 40s)
65 Ragtop Bug (Mrs Griff)
98 Subaru Legacy GTB (330hp)
06 VW T5 1.9tdi T28
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BobbyH Quote  Post ReplyReply Direct Link To This Post Posted: 01 Dec 17 at 20:24
Sorry for the thread resurrection but isn't the guide on the Samba just putting extra load/feed through the switch if you are splicing into the fuse to switch side rather than the switch to light side?

Not great with electricity but it looks rather straight forward.

Edited by BobbyH - 05 Dec 17 at 07:28
1989 1.9DG Devon/homebrew Waterboxer
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ducce999s Quote  Post ReplyReply Direct Link To This Post Posted: 08 Dec 17 at 14:43
Im using this type of ready set

headlight wiring set

Syncro addict :)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BobbyH Quote  Post ReplyReply Direct Link To This Post Posted: 08 Dec 17 at 16:25
I have all the parts, and understand the basics, it just looks as though the Samba guide feeds in to the fuse to switch/stalk side rather than the feed direct to the lights so I was wondering doesn't that just push all the load through the switch? Which is what I thought a relay was meant to avoid.

If so where is it best to interrupt to add the relay?
1989 1.9DG Devon/homebrew Waterboxer
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AndyT Quote  Post ReplyReply Direct Link To This Post Posted: 08 Dec 17 at 17:12
LT28 1979 2.0 Pampas Nevada Camper LPG 93K, 1980 T3 Aircooled Camper, 98K
1994 RRC 3.9 LPG 120k , 1997 Disco V8i 158k miles

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Post Options Post Options   Thanks (0) Thanks(0)   Quote AndyT Quote  Post ReplyReply Direct Link To This Post Posted: 08 Dec 17 at 17:20
P.S. don't forget the wiring load, if you are not sure get the kit linked above or similar.

I remember the formula as Virgins Are Rare. Volts over Amps * Resistance or (Watts)
So a 60W bulb would give 12/60*Watts a 5amp load.
A 100W bulb 12/100*Watts a 8.33amp load.

Always leave a safety margin, for the above example I'd use 16amp cable and a 10amp fuse.


Edited by AndyT - 08 Dec 17 at 17:36
LT28 1979 2.0 Pampas Nevada Camper LPG 93K, 1980 T3 Aircooled Camper, 98K
1994 RRC 3.9 LPG 120k , 1997 Disco V8i 158k miles

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