Defender 110 Weak Headlights - Defender Source
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  #1  
Old December 7th, 2014, 07:51 PM
bulldog90
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Kenny
1986 110
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Defender 110 Weak Headlights

I have an 86 110 and the headlights are weak - I replaced the headlights but not the issue. Has anyone had this issue
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  #2  
Old December 7th, 2014, 07:55 PM
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Pretty common. There's a big loss in voltage from the switch to the headlights so they're likely not receiving 'full power'. The easiest thing to do is to pull power with a heavier gauge wire straight off the battery and to a switched relay that you toggle with the existing headlight wiring. You ought to see an increase in output.

-Ash
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  #3  
Old December 8th, 2014, 06:00 PM
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  #4  
Old December 8th, 2014, 06:29 PM
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You want:

ARB heavy duty wiring loom
Hella H4 housings
Hella H4 55W/100W "off road use only" bulbs

Details here: http://www.defendersource.com/forum/...d.php?p=580487

The pigtail bits may or may not apply to you, depending on how your lights are wired right now.
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  #5  
Old December 8th, 2014, 11:51 PM
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This is the simplest method to correct the problem. Yes you do need the ceramic sockets because our stock sockets will burn out.

http://www.ebay.com/itm/H4-Relay-Har...0c2cc8&vxp=mtr
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  #6  
Old December 9th, 2014, 12:45 AM
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Also check the grounds. IIRC they or it is on the passenger side inner fender.
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  #7  
Old December 9th, 2014, 07:51 PM
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Are they weak as in there is a problem or are they just inadequate. On my '85, the bullet connectors were loose and slightly corroded. Jiggling the connector would make them work normally.
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