Hey there HT, ive been having a electrical issue in my 94 hatch si. Okay here it goes. Everytime I have the car on and I turn my headlight **** once, my dash comes on and everything is normal, but when I turn it once more to turn my head lights on, my clock, dash, ac lights, all are dim... I have a after market radio in my car and my dash fuse blew everytime And I fixed that tho, the illumination wire was bare so i tapped it off with electric tapeand the fuse didnt blow and my radio was fine, any help is aawesome! And i did do my research and all I found was "fuses" i already swapped out ALL my fueses... Also i can post pics of anything you guys need to see!

 

If the fuse still keeps blowing, there's a short/grounded wire somewhere. Could also be a bad headlight stalk switch or dimmer slider switch.

 

The illumination wire was bare on which side of the harness? Is it attached to your deck? I'd lean towards needing a new switch.

 

have you tried using the dimmer switch to increase the brightness?

if not then i lean towards the switch being bad or short somewhere

 

Did this problem also happen *before* the installation of the radio / head unit?

 

I am pretty sure the clock is suppose to dim when the head lights are turned on. What type of head unit did you install?

 

^ Clock dims with parking lights. OP is suggesting that the clock dims only when headlights are on, plus all sorts of other stuff on the dash that *isn't* supposed to dim.

 

Has the battery and alternator been tested?

 

This happened before I installed a radio, brand new battery was put in a couple of days ago (my old battery wasnt holding a charge) alternator was checked at autozone and is good. And the illumination wire is the one that is on the radio harness im guessing. I will post a picture, my dimmer switch works fine , I can turn it up and down and I see my dash getting brighter and dimmer, unless its not strong enough haha. Should I change the dimmer switch? Where are the common grounds that can cause this? My radios ground is hooked up to the harness. My radio is a pioneer deh 2000mp

 

By dash i meant my cluster

 

Also is it normal for the clock and ac lights to dim when the headlight switch is turned once and twice? Sorry, its my first car and never owned a honda lol. Went from driving my parents lexus to this hatch so bare with me

 

Yes

 

Oh okok, like really really dim though? Like to the point where I can barely see the clock

 

If it's daylight out, then yes. If it's dark out and you still can't see them, then no.

 

Ok thanks

 

Okay so i fixed the fuse problem! It was one of the radios wires that was touching metal. But now i justt noticed the little green led on my cruise control and fog light seitch doesnt come on when pressed. The words cruise and the fog light logo comes on though.... Any ideas?