Lights driving me f-ing crazy! - Defender Source
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  #1  
Old July 27th, 2013, 05:36 PM
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Lights driving me f-ing crazy!

I can't get my lights to work right, been screwing around with them for a week.
I assume if I have all the wires on the right lights and they're all grounded to the frame I should be OK.
I turn on the lights and all the lights come on up front, running and directionals
Put directionals on and the brake lights and and the directionals blink, all kind of crazy sh#t.
It's a 1985.
Any ideas? I'm mostly just venting.
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  #2  
Old July 27th, 2013, 05:43 PM
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Are you just re connecting the lights after doing a re-build? Did you change any of the grounds from the way you had it before taking it apart? I had some issues, similar but not the same, when I re-wired my truck after taking it apart. I grounded the headlights to the black ground wire that is routed along with the directional/running/headlights, and then grounded that wire to the body/frame, and had all kinds of issues. So I grounded that wire by itself, and grounded the other lights separately, and the issues went away.
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  #3  
Old July 27th, 2013, 05:55 PM
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That may be it. Ill try it tomorrow, I can't look at the truck anymore today.
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  #4  
Old July 27th, 2013, 06:05 PM
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Quote:
Originally Posted by tomaco1 View Post
Put directionals on and the brake lights and and the directionals blink, all kind of crazy sh#t.
When it comes to electrical issues, it's best to solve one issue at a time.

First, fix the brake lights blinking with the directionals.

It is obvious that the brake lights are somehow connected to the blinker circuit when they should not be. There is one wire that connects the blinker relay to both the left and right directionals. This one wire goes the directionals control on the steering column. The directionals control has then two wires, one that goes to the front and rear left blinkers and one that goes to the front and rear right blinkers.

Now, there is a hazard switch. The hazard switch has one purpose: To connect both all four blinkers to the one wire that goes to the blinker relay. However, it is not this simple. In order to work properly, the hazard switch must connect power to the blinker relay - even when the car is "off". Directionals are only powered with accessory power.

Therefore, the hazard switch has to several things when pushed:

1. Disconnect +12V ACC from the blinker relay.
2. Connect +12V HOT to the blinker relay.
3. Connect all four signals to the blinker relay.

So somewhere you have the brake lights connected to the blinkers. This is what you should fix first and I can almost assure you will fix all your other problems.
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Old July 27th, 2013, 06:28 PM
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I have the same exact issue. I have not tried to fix anything due to it being to hot in my garage but I would start at the ignition switch and check or power. Then to the fuse box area again checking for power to the accessory relays, etc. keep us posted please when you find your solution.
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  #6  
Old July 31st, 2013, 06:53 PM
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All lights blink with the hazards
Running an directional in frt
Brake and directions in rear.
When I pull the hella relay
Turn lights on
Front everything lights except left directional
Rear just right brake and directional
Relay is grounded, all lights are grounded
Bout to blow up truck.
And my directional dash light goes on when I put the headlights on?
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  #7  
Old July 31st, 2013, 07:11 PM
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Brake lights work, but directional dash light comes on when ever I push the brake pedal.
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  #8  
Old August 3rd, 2013, 07:39 PM
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Still haven't figured this out!
I've got power going to the green/white right direction indicator when ever the lights are on? Even if I remove the hazard switch the g/w is still powered.
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  #9  
Old August 3rd, 2013, 10:26 PM
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Did you install new turn and light switches?
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  #10  
Old August 4th, 2013, 12:55 AM
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Quote:
Originally Posted by tomaco1 View Post
Still haven't figured this out!
I've got power going to the green/white right direction indicator when ever the lights are on? Even if I remove the hazard switch the g/w is still powered.
Is the Green/White powered all of the time, or just when the headlights are on? How about when it's just the marker lights and no headlights?

When you say it's powered, how do you know? Because the lights are on? Or did you hook a meter up to it?

You have something cross-wired somewhere... we will figure it out...
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  #11  
Old August 4th, 2013, 06:38 AM
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Just when the lights are on.
When marker lights are on, and headlights are on.
I used a test light and checked at he front right corner , rear right corner, hazard switch removed, and at the indicator switch
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Old August 4th, 2013, 06:54 AM
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Quote:
Originally Posted by tomaco1 View Post
Brake lights work, but directional dash light comes on when ever I push the brake pedal.
That's the brake light circuit looking for a ground ... so check your grounds at the tail lights first , how old is the hazard switch ? it could be faulty i have seen that more than once .. this diagram should help you out .....

Green/white wire is indicator lamp(aka right turn signal) should be powered only when right turn signal is selected ...
im guessing faulty hazard switch or bad ground at switch
if you have power there all the time check the signals at the relay , relay could also be locked on or missing ground

if your still lost im always up for a barter!!!!!
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  #13  
Old August 4th, 2013, 10:43 AM
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Quote:
Originally Posted by tomaco1 View Post
Just when the lights are on.
When marker lights are on, and headlights are on.
I used a test light and checked at he front right corner , rear right corner, hazard switch removed, and at the indicator switch
OK, then this is a ground problem.

Most of the exterior lighting use shared ground lugs. Go check the black wire on each lamp on the truck, and follow it to its ground lug. Make sure it's well connected, no corrosion, and tightened down.

Does the turn signal indicator also come on in the instrument panel? That's the path to ground.
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  #14  
Old August 4th, 2013, 11:46 AM
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It does, comes on when I step on the brakes to.
Quote:
Originally Posted by navydevildoc View Post
OK, then this is a ground problem.

Most of the exterior lighting use shared ground lugs. Go check the black wire on each lamp on the truck, and follow it to its ground lug. Make sure it's well connected, no corrosion, and tightened down.

Does the turn signal indicator also come on in the instrument panel? That's the path to ground.
------ Follow up post added August 4th, 2013 11:47 AM ------

I can ground the lights to each corner of the truck right, to the frame?
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  #15  
Old August 4th, 2013, 11:59 AM
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If your turn signal is coming on with the brakes, then check the grounds on the right rear first. Each side shares a ground. Something tells me you will find one either not connected, or very poorly connected. The voltage runs through the brake light, then since it can't find a ground it runs through the turn signal, energizes your green/white wire, which lights up your right hand side turn signal as well as the indicator on the dash. If the voltage is strong enough, then it will also bleed over into your left hand turn signals as well.
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  #16  
Old August 4th, 2013, 03:59 PM
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I assume its ok to ground each corner of the truck to the frame? Can all the lights at that corner be grounded to the same spot?
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  #17  
Old August 4th, 2013, 04:28 PM
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What I have seen happen is corrosion in the wire sheath on the individual strands of copper, greenish color. It may run for a long time in the wire, several feet at times. The water gets into the wire and travels along the strands. You may have to cut back the ground wires until you get to a good portion of the wire. As stated above I would start in one corner with what you have and add a temporary ground to the frame and see if that helps. If it helps then you know what the problem is, if not then you will have to dig a little deeper.
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  #18  
Old August 4th, 2013, 04:56 PM
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Quote:
Originally Posted by tomaco1 View Post
I assume its ok to ground each corner of the truck to the frame? Can all the lights at that corner be grounded to the same spot?
Yes, The lights at that corner can be grounded to the same spot.
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Old August 4th, 2013, 04:58 PM
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Thanks
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  #20  
Old August 17th, 2013, 07:28 AM
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After leaving it alone for a week, here's what I still have.

Lights on:

Front left: works
Front right: marker lights work, but directional comes on also, stays on solid
Rear right: red and amber stay on
Rear left: nothing comes on

Any ideas?
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