Hey there!

I own an `02 Acura EL (02 Civic EX sedan),
And I`ve been trying to fix an issue with my hot air.
In the midst of trying to solve that issue,
I some how cut power to all accessory lighting on the dash (Dials & Odometer),
My Headlight DRLs don`t work, and my Tail lights dont either (Brake lights do work)

It seems as if everything that`s related to the DRL module is effected.
But not quite certain.
Anyways, Im looking into steps as for what to diagnose.
The problem seemed to have happen after taking out the middle dash and checking if any of the harnesses were disconnected.

(Which I know now didn`t have anything to do with the heater core)

**What does not work**
-Dash Lights (In terms of Dials and the odometer, Standard symbols work)
-heater control dials are not lit
-Headlight DRL (Yellow lights - Not signal)
-Tail lights (Not break lights, those work)

**What I`ve done**
-Check fuses
-Reseat harness ends and clean them with electrical contact cleaners

**What I haven`t done**
-Check for bad grounds (With multimeter?)
-Possible bad fuse box?
-DRL module (Ive always had issues with Hi beams only working on the right side)
-Replace my heater control dial module (The lights used to flicker when turning the fan speed etc)

Thank you!

 

Moved to car forum for better response.