# Buzzing speaker after headlight bulb change **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [December 5, 2019, 11:09pm UTC](https://community.cartalk.com/t/buzzing-speaker-after-headlight-bulb-change/154119 "2019-12-05T23:09:45Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![jdmere](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/jdmere/32/3002_2.png) [@jdmere](https://community.cartalk.com/u/jdmere)\ **Post date:** [December 5, 2019, 11:09pm UTC](https://community.cartalk.com/t/buzzing-speaker-after-headlight-bulb-change/154119/1 "2019-12-05T23:09:45Z")
2009 Subaru Outback. I changed all 4 headlight bulbs (H7 for low beam and 9005 for high beam) and now when I turn the low beams on there is a buzzing noise from the right-hand door speaker. Causal link or coincidence? ---
**Author:** ![old\_mopar\_guy](https://avatars.discourse-cdn.com/v4/letter/o/6bbea6/32.png) [@old\_mopar\_guy](https://community.cartalk.com/u/old_mopar_guy)\ **Post date:** [December 5, 2019, 11:15pm UTC](https://community.cartalk.com/t/buzzing-speaker-after-headlight-bulb-change/154119/2 "2019-12-05T23:15:40Z")
If I may quote Leroy Jethro Gibbs, “There is no such thing as a coincidence”. ---
**Author:** ![jtsanders](https://avatars.discourse-cdn.com/v4/letter/j/c2a13f/32.png) [@jtsanders](https://community.cartalk.com/u/jtsanders)\ **Post date:** [December 6, 2019, 12:22am UTC](https://community.cartalk.com/t/buzzing-speaker-after-headlight-bulb-change/154119/3 "2019-12-06T00:22:21Z")
No link between the two. Stuff happens. ---
**Author:** ![galant](https://avatars.discourse-cdn.com/v4/letter/g/77aa72/32.png) [@galant](https://community.cartalk.com/u/galant)\ **Post date:** [December 6, 2019, 12:32am UTC](https://community.cartalk.com/t/buzzing-speaker-after-headlight-bulb-change/154119/4 "2019-12-06T00:32:52Z")
Are these LED or HID type bulbs or regular halogen? You can get the bulbs out, maybe even one by one and see if the noise disappears. ---
**Author:** ![shanonia](https://avatars.discourse-cdn.com/v4/letter/s/9de053/32.png) [@shanonia](https://community.cartalk.com/u/shanonia)\ **Post date:** [December 6, 2019, 12:52am UTC](https://community.cartalk.com/t/buzzing-speaker-after-headlight-bulb-change/154119/5 "2019-12-06T00:52:41Z")
Easier than taking them out: with radio playing, unplug them one at a time. ---
**Author:** ![vipergg](https://avatars.discourse-cdn.com/v4/letter/v/50afbb/32.png) [@vipergg](https://community.cartalk.com/u/vipergg)\ **Post date:** [December 6, 2019, 1:21am UTC](https://community.cartalk.com/t/buzzing-speaker-after-headlight-bulb-change/154119/6 "2019-12-06T01:21:53Z")
Did you keep halogens or did you switch them to leds or hid ? If you changed then yes it could be one of the new bulbs . A lot of those are NOT just plug and play despite what they say specially if you got cheap ones . ---
**Author:** ![jdmere](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/jdmere/32/3002_2.png) [@jdmere](https://community.cartalk.com/u/jdmere)\ **Post date:** [December 6, 2019, 2:55am UTC](https://community.cartalk.com/t/buzzing-speaker-after-headlight-bulb-change/154119/7 "2019-12-06T02:55:27Z")
These are the same type of bulbs that were in there before, just halogen. Update: the issue seems to be limited to the AUX setting with the audio cable connected to the outlet in the center console. If I unplug the cable the noise ceases. The FM setting works fine. OEM radio. ---
**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\ **Post date:** [December 6, 2019, 2:56am UTC](https://community.cartalk.com/t/buzzing-speaker-after-headlight-bulb-change/154119/8 "2019-12-06T02:56:37Z")
> [@jdmere](#): > > limited to the AUX setting with the audio cable connected. Try a new audio cable . ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [December 6, 2019, 4:51am UTC](https://community.cartalk.com/t/buzzing-speaker-after-headlight-bulb-change/154119/9 "2019-12-06T04:51:41Z")
There’s usually a wire from each light fixture that connects to the chassis in that area. Make sure all of those are making a good connection, clean all corrosion, etc. ---
**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\ **Post date:** [December 7, 2019, 1:31am UTC](https://community.cartalk.com/t/buzzing-speaker-after-headlight-bulb-change/154119/10 "2019-12-07T01:31:44Z")
The unterminated AUX cable is acting as an antenna and picking local electrical noise which then gets amplified by the AUX input circuit. Keep the cord unplugged unless you are using it. ---
**Author:** ![jdmere](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/jdmere/32/3002_2.png) [@jdmere](https://community.cartalk.com/u/jdmere)\ **Post date:** [December 7, 2019, 4:22am UTC](https://community.cartalk.com/t/buzzing-speaker-after-headlight-bulb-change/154119/11 "2019-12-07T04:22:39Z")
Nailed it, Cougar. With the IPod attached the noise disappears. Thanks for the insight. ---
**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\ **Post date:** [December 9, 2019, 12:19am UTC](https://community.cartalk.com/t/buzzing-speaker-after-headlight-bulb-change/154119/12 "2019-12-09T00:19:00Z")
You’re welcome for the help. Unterminated input lines can cause strange STUFF to happen. With the iPod connected you then have some resistance and shielding to reduce and block the noise input to the AUX circuit.