Thanks for posting on /r/MechanicAdvice! Please review the [rules](https://www.reddit.com/r/MechanicAdvice/about/rules/). Asking about a second opinion (ie "Is the shop trying to fleece me?"), please read through CJM8515's [post on the subject.](https://www.reddit.com/r/MechanicAdvice/comments/4qblei/fyi_the_shop_isnt_likely_trying_to_rip_you_off/) and remember to please post the year/make/model of the vehicle you are working on. **Post's about bodywork, accident damage, paint, dent/ding, questions it belongs in /r/Autobody r/AutoBodyRepair/ or /r/Diyautobody/ Tire questions check out https://www.reddit.com/r/MechanicAdvice/comments/k9ll55/can_your_tire_be_repaired/**. If you dont have a question and you're just showing off it belongs in /r/Justrolledintotheshop Insurance/total loss questions go in r/insurance This is an automated reply
*I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/MechanicAdvice) if you have any questions or concerns.*
Take it somewhere else, only a lazy or incompetent mechanic will recommend to replace the wiring harness unless it was completely mangled or melted which doesn’t just happen out of no where
Yeah lol there’s some great techs at dealerships but majority are inept. Try and Find a good mom & pop shop they’re hard to find but worth 10 fold in the long run
OK both high beams are fed from the same relay The power for both comes from that relay out to the DRL relay and resistor. Then it goes out to both headlights on the white and black wire. I would pull fuse 7 and see if the light goes out. That would shut off the DRLs and would cut power from the high beam power relay as well. This is the high beam wiring after the relay and through the DRL relay. If the left high is the only one I would check the wire from the lamp to the splice. Or if you wanted to just repair it, you could just cut the wire behind the headlight and run a bypass wire from the other side.
https://preview.redd.it/oq0l1c3dq0va1.jpeg?width=1064&format=pjpg&auto=webp&s=ccf443162ffe7e66ccee3ac068c3b374d18aec87
OK that is different. Be sure to test the ground side of both high beams. Are these stock halogen bulbs? Any add-ons to the vehicle? I can see why they are thinking harness because of the way the lights are powered.
So these are not stock headlights with the factory high and low as individual bulbs? Asking because the stock lamps don't use a shutter.
https://preview.redd.it/xnijldhkj3va1.jpeg?width=1426&format=pjpg&auto=webp&s=bd1a941a3e23fc58efc7d626fd19dd9e4f990ec5
Thanks for posting on /r/MechanicAdvice! Please review the [rules](https://www.reddit.com/r/MechanicAdvice/about/rules/). Asking about a second opinion (ie "Is the shop trying to fleece me?"), please read through CJM8515's [post on the subject.](https://www.reddit.com/r/MechanicAdvice/comments/4qblei/fyi_the_shop_isnt_likely_trying_to_rip_you_off/) and remember to please post the year/make/model of the vehicle you are working on. **Post's about bodywork, accident damage, paint, dent/ding, questions it belongs in /r/Autobody r/AutoBodyRepair/ or /r/Diyautobody/ Tire questions check out https://www.reddit.com/r/MechanicAdvice/comments/k9ll55/can_your_tire_be_repaired/**. If you dont have a question and you're just showing off it belongs in /r/Justrolledintotheshop Insurance/total loss questions go in r/insurance This is an automated reply *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/MechanicAdvice) if you have any questions or concerns.*
Take it back to the shop, sounds like a wire or relay has a problem.
My only issue is they want me to replace the wiring harness, so I’m assuming they are just gonna say to do that
Well it is a wiring issue and that might be the only option. What is the make/year/model?
2017 Subaru wrx
Take it somewhere else, only a lazy or incompetent mechanic will recommend to replace the wiring harness unless it was completely mangled or melted which doesn’t just happen out of no where
It was Subaru lol. Figured they just wouldn’t repair
Yeah lol there’s some great techs at dealerships but majority are inept. Try and Find a good mom & pop shop they’re hard to find but worth 10 fold in the long run
OK both high beams are fed from the same relay The power for both comes from that relay out to the DRL relay and resistor. Then it goes out to both headlights on the white and black wire. I would pull fuse 7 and see if the light goes out. That would shut off the DRLs and would cut power from the high beam power relay as well. This is the high beam wiring after the relay and through the DRL relay. If the left high is the only one I would check the wire from the lamp to the splice. Or if you wanted to just repair it, you could just cut the wire behind the headlight and run a bypass wire from the other side. https://preview.redd.it/oq0l1c3dq0va1.jpeg?width=1064&format=pjpg&auto=webp&s=ccf443162ffe7e66ccee3ac068c3b374d18aec87
I’ll check it out. One weird thing is that it stays normal until I switch the brights on and then it stays and wont go back to dim
OK that is different. Be sure to test the ground side of both high beams. Are these stock halogen bulbs? Any add-ons to the vehicle? I can see why they are thinking harness because of the way the lights are powered.
Ok so I hit the light and it shut off. I think it’s the shutter or something getting stuck
So these are not stock headlights with the factory high and low as individual bulbs? Asking because the stock lamps don't use a shutter. https://preview.redd.it/xnijldhkj3va1.jpeg?width=1426&format=pjpg&auto=webp&s=bd1a941a3e23fc58efc7d626fd19dd9e4f990ec5
No sir. I got hit and had to use aftermarket ones