I installed an HID setup on my 95 hatch the other day, and today I installed a stereo setup (composites with amp and sub) Its working fine and is properly setup, however when I turn on the HID's i get a constant fairly loud high pitch noise.

A couple of quick things to note. I grounded the HID setup at the battery location ground spot. (seen in photo 2) Also, I'm using the battery terminal that came with the amp kit. The HID and Stereo are connected to it about 1cm from each other and the wires do touch.

 

You may be getting a ground loop. I'm not understanding what you mean that you're using the battery terminal that came with the amp.

Are the HID's and the stereo system grounded to the same spot? That's where I'd start.

 

The terminal came with the amp KIT. (The wiring etc)

I moved the HID ground to a different location, however there is no change in the noise.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C_EJ8 &raquo;</TD></TR><TR><TD CLASS="quote">You may be getting a ground loop.

Are the HID's and the stereo system grounded to the same spot? That's where I'd start.</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eyal 951 &raquo;</TD></TR><TR><TD CLASS="quote">
I moved the HID ground to a different location, however there is no change in the noise.</TD></TR></TABLE>

 

Maybe I'm not being clear. Did you try grounding the HID's and the stereo system (each piece of equipment) to the same place?

I thought by mentioning the ground loop, you'd get the hint, but you probably don't know what a ground loop is...

 

Yea I didn't know what ground loop was, sorry.

No i did not, but I just sourced the problem. I cannot bolt the Ballasts to the chassis because the noise they make is picked up and magnified in the system, probably via the grounds.

Imma have to zip tie them to something, which is kinda ghetto, but whatever, its not like I have a tucked bay to worry about.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eyal 951 &raquo;</TD></TR><TR><TD CLASS="quote">No i did not, but I just sourced the problem. I cannot bolt the Ballasts to the chassis because the noise they make is picked up and magnified in the system, probably via the grounds.</TD></TR></TABLE>


Ground loop.

Anyways... To not be ghetto, you could always cut a couple of pieces of plywood slightly bigger than the ballasts. Then, screw the plywood to the vehicle, then screw the ballasts to the wood. As long as your screws don't hit each other, the ballasts will be isolated from the chassis, and you won't have expensive equipment zip-tied & waiting to fall off.

 

yea I was thinking about doing that. Its just hard to find room.

 

You had room to screw down the ballasts inititially, yesno?

 

you can always get rubber/nylon washers to put in between the ballast and the chassis and the screws...


tho it is hard to find a collar so that the screws won't touch the ballast....

i don't recommend wood... cause it holds moisture, and can rot...

use a piece of plastic as insulation... just make sure its a high temp one.... just in-case the ballast gets hot...

 

yea thats what imma do.