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longzooki
Joined: Tue Aug 28, 2012 9:29 am Posts: 62
Vehicle: 1985 lwb 1.3 nt sierra
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 Posted: Tue Sep 04, 2012 7:28 pm |
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Hey guys,
getting nothing when i turn my headlights on. bulbs are fine,no blown fuses,when i hook my test light to the body or negative battery terminal it shows power going to the globes but nothing happening after them. if i earth the globe(with earth.wire) it comes on.
Little bit of a headscratch happening at the mo, any thoughts will be appreciated
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caboose
Joined: Sun Aug 14, 2011 2:07 am Posts: 64 Location: perth
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 Posted: Tue Sep 04, 2012 8:31 pm |
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possibly the switch has a bad earth, also check if there is a connection form the head light plug to the switch
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TZAR

az supporter
Joined: Tue Aug 01, 2006 11:30 pm Posts: 3459 Location: licking some windows
Vehicle: LJ20 LJ50
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 Posted: Tue Sep 04, 2012 9:29 pm |
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They are negative switched.
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longzooki
Joined: Tue Aug 28, 2012 9:29 am Posts: 62
Vehicle: 1985 lwb 1.3 nt sierra
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 Posted: Tue Sep 04, 2012 9:41 pm |
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Definitely connected to the switch, i held the test light to the pos on the switch and that was definitely turning on and off. also the terminals on the globe were switching on or off with the switch. Hey Tzar, at the risk of sounding like an idiot what does that mean and how do i fix it? electrical isnt my strong point but i want to learn 
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fordem
Joined: Mon Apr 19, 2010 11:30 pm Posts: 2655 Location: Georgetown, Guyana
Vehicle: JB420, APK416, A6G415, A6N415
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 Posted: Tue Sep 04, 2012 10:39 pm |
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Negative switched means the switch is in the negative or ground side of the circuit - which explains why the globes light when you ground them.
Go and ground the wire where it goes in to the switch (use a 15A fuse if you're worried about a short circuit) - if the lights come on, you have a problem in the switch, if the lights don't then they're not connected to the switch.
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longzooki
Joined: Tue Aug 28, 2012 9:29 am Posts: 62
Vehicle: 1985 lwb 1.3 nt sierra
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 Posted: Tue Sep 04, 2012 10:54 pm |
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Ohh awesome thanks fordem. I have read that the wiring for the headlights is notoriously weak,should i re-wire them and use some better cable and new relays? That way i could put the switches in the positive side and just ground them properly up front?
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fordem
Joined: Mon Apr 19, 2010 11:30 pm Posts: 2655 Location: Georgetown, Guyana
Vehicle: JB420, APK416, A6G415, A6N415
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 Posted: Wed Sep 05, 2012 2:49 am |
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longzooki
Joined: Tue Aug 28, 2012 9:29 am Posts: 62
Vehicle: 1985 lwb 1.3 nt sierra
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 Posted: Wed Sep 05, 2012 9:36 am |
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That looks like it would be much easier. might do some research and do my own anyway. This car is a learning project 
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royce

omnipotent being
Joined: Sun Jun 11, 2006 11:30 pm Posts: 17216 Location: Pluto
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 Posted: Thu Sep 06, 2012 6:26 pm |
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do your wipers work? does your high beam come on when you pull the high low beam back to pass?
find the plug under the column with the most wires in it and find the low and high beam wires (match to the colours at the headlight plug in the top and right hand vertical pins when looking from the back of the plug
earth your testlight and stab those wire as close to the switch as you can, if the test light glows dim and the headlight sort of glows the wiring is ok.
now find the other plug under there with less wires and find the black one and turn your lights on, stab this with your test light again on the switch side of the plug, if it lights up try the other side, if it still lights up check all your earths under there, its likely come off or loose
if it doesnt light up the switch is probably had it or dirty
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longzooki
Joined: Tue Aug 28, 2012 9:29 am Posts: 62
Vehicle: 1985 lwb 1.3 nt sierra
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 Posted: Fri Sep 07, 2012 9:53 am |
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Ahh beauty,il give it a crack soon as i get home. thanks royce
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