Lo Beams = Dead
Dash Lights / HVAC Controls = Dead
Tail Lights = Dead
Brake Lights = Works
Signal Lights = Works
Hazard Lights = Works
Dome Light = Works
At the Headlights
New Bulbs - Tested and working in another car
Plug on both headlights - Looking at it straight on
Left - Hi Beam 12v on the Hi Beam setting / 0v on the Lo Beam setting
Top - Low Beam 0v on the Lo Beam setting / 0v on the High Beam setting
Right - Ground 0v / -12v
Fuses under the Hood
All show 12v on both sides of the fuses when the ignition is on the "on" position and the headlight switch is on the Lo Beam setting.
Fuses under the Steering Wheel
Hi Beam Left - Both sides of the fuse show 12v on the Hi Beam setting
Hi Beam Right - Both sides of the fuse show 12v on the Hi Beam setting
Lo Beam Left - Both sides of the fuse show 0v on the Lo Beam setting
Lo Beam Right - Both sides of the fuse show 0v on the Lo Beam setting
Dash / Tail Lights - Both sides of the fuse show 0v on the Lo or Hi Beam setting
At the Light Switch on the Steering Column
Red / White Stripe - 12v on Lo / 0v on Hi / 0v on off
Red / Green Stripe - 12v on Lo / 12v on Hi / 0v on off
Blue / Red Stripe - 12v on Hi / 0v on Lo / 0v on off
White on clip side - 12v on any position
White on non clip side - 12v on any position
Green / Orange Stripe / Silver Ring - 12v on any position
Green / Blue Stripe / Silver Ring - 0v on off / 9v Fluctuate on Left Turn Signal
Green / Yellow Stripe / Silver Ring - 0v on off / 9v Fluctuate on Right Turn Signal
Top - Red / Black Stripe / Silver Ring
Middle - Black / Silver Ring
Bottom - Red / Double Silver Ring
All show 0v in the off or Lo Beam setting
All show -12v when using power from another source and testing for Ground. So all 3 wires worked as a ground.
*Dimmer Switch tested on another Civic - Middle Black wire is ground. Top Red / Black wire is 12v when in Lo position. Bottom Red / Double Silver Ring is Dimmer output = 1v to 7v from end to end on dimmer knob.
There is the data I gather up top. So there is no power at the head light for the Lo Beam. There is power to the Switch on the steering column and there is power coming out of the Switch as well. The Dimmer show no power. The Fuse Box in the engine bay show power. The Fuse Box under the steering wheel show No Power for the Lo Beams, Interior Lights, and Tail Lights on both sides of the fuse. The Hi Beam shows Power.
So somewhere between the Switch to the Fuse Box / Dimmer Switch the power signal is lost.
Is there anything in between the Switch, Fuse Box, and Dimmer Switch? Other than wires. A relay or circuit board?
I'm going to change out the heater core soon, so that will give me plenty of room to trace the wires for shorts and rewire anything I need to. I just want to know if there is anything I should be looking for that may cause this issue.
The Lo Beam went dead with no recent modification to any wiring. Last time wiring was modified was at least a year before the Lo Beams died. The Viper alarm system was removed and the Kenwood stereo head unit was removed.
The interior lights and tail lights went dead yesterday when I changed out the Light Switch on the steering column. All I did was change out the switch for another used switch. Both switch show the same readings with the multi-meter. Really annoying that when I try to fix the Lo Beams that it got worst by killing the interior lights and taillights. The left Hi Beam went dead while checking all of this too. Which pissed me off more, but luckily I found out that the plug at the Head Light is loose.
Let me know your guys thought on what is causing the issue. This will give me some idea of what I'm looking for when I remove the dash.