# 2016 Jetta - Rear/Left trunk running lights won't turn on, but bulbs are still good **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** jetta, volkswagen, lights\ **Created:** [November 12, 2021, 12:50am UTC](https://community.cartalk.com/t/2016-jetta-rear-left-trunk-running-lights-wont-turn-on-but-bulbs-are-still-good/180616 "2021-11-12T00:50:12Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![shavertech](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/shavertech/32/26725_2.png) [@shavertech](https://community.cartalk.com/u/shavertech)\ **Post date:** [November 12, 2021, 12:50am UTC](https://community.cartalk.com/t/2016-jetta-rear-left-trunk-running-lights-wont-turn-on-but-bulbs-are-still-good/180616/1 "2021-11-12T00:50:12Z")
As the title says, my left rear running lights won’t turn on. I pulled the assembly and tested each of the three bulbs with a multimeter, and they’re all good. I tried checking the fuses but honestly, I’m having a tough time identifying which one it could be. I ended up pulling all the fuses, and I don’t see any burnouts. All the other lights work fine, so I feel like (maybe incorrectly) that it’s not a fuse issue anyway. Next I would say it’s a wiring issue, but that seems far-fetched since I haven’t had any work done to the car, other than an oil change a couple of months ago. ---
**Author:** ![jtsanders](https://avatars.discourse-cdn.com/v4/letter/j/c2a13f/32.png) [@jtsanders](https://community.cartalk.com/u/jtsanders)\ **Post date:** [November 12, 2021, 1:01am UTC](https://community.cartalk.com/t/2016-jetta-rear-left-trunk-running-lights-wont-turn-on-but-bulbs-are-still-good/180616/2 "2021-11-12T01:01:35Z")
Check the connector with your multimeter to see if there is continuity if you haven’t already. Work back along the circuit from there. If you don’t have a circuit diagram, maybe you can find one on line or someone else here has one. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [November 12, 2021, 1:14am UTC](https://community.cartalk.com/t/2016-jetta-rear-left-trunk-running-lights-wont-turn-on-but-bulbs-are-still-good/180616/3 "2021-11-12T01:14:26Z")
If the light is on the trunk lid, that means there has to be a wiring harness from the body to the trunk lid. ![image](https://global.discourse-cdn.com/cartalk/original/3X/c/6/c62c94a04a1c35c26b9d0c58178ebc379f80ef56.jpeg) Try wiggling this harness with the trunk open and closed. Tester ---
**Author:** ![shavertech](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/shavertech/32/26725_2.png) [@shavertech](https://community.cartalk.com/u/shavertech)\ **Post date:** [November 12, 2021, 1:39am UTC](https://community.cartalk.com/t/2016-jetta-rear-left-trunk-running-lights-wont-turn-on-but-bulbs-are-still-good/180616/4 "2021-11-12T01:39:20Z")
I did check the assembly connectors, but no issues there ---
**Author:** ![shavertech](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/shavertech/32/26725_2.png) [@shavertech](https://community.cartalk.com/u/shavertech)\ **Post date:** [November 12, 2021, 1:40am UTC](https://community.cartalk.com/t/2016-jetta-rear-left-trunk-running-lights-wont-turn-on-but-bulbs-are-still-good/180616/5 "2021-11-12T01:40:24Z")
Thanks, I will try this in the morning when it’s not raining so hard ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [November 12, 2021, 2:27am UTC](https://community.cartalk.com/t/2016-jetta-rear-left-trunk-running-lights-wont-turn-on-but-bulbs-are-still-good/180616/6 "2021-11-12T02:27:11Z")
Did you check for a good ground? Lights won’t work without a positive and and ground.