# New car radio wont turn on **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** ram, 1500\ **Created:** [July 24, 2018, 11:00pm UTC](https://community.cartalk.com/t/new-car-radio-wont-turn-on/121636 "2018-07-24T23:00:38Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![Randyyo](https://avatars.discourse-cdn.com/v4/letter/r/8dc957/32.png) [@Randyyo](https://community.cartalk.com/u/Randyyo)\ **Post date:** [July 24, 2018, 11:00pm UTC](https://community.cartalk.com/t/new-car-radio-wont-turn-on/121636/1 "2018-07-24T23:00:38Z")
Hello, I am installing a new car radio, and I’m not getting power to yellow or red wires with the wiring harness connected, i checked the ground wire and it is a good ground with a multi meter. Do you think its the wiring harness or something else? I reinstalled my old radio and it works just fine. ---
**Author:** ![NYBo](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nybo/32/17281_2.png) [@NYBo](https://community.cartalk.com/u/NYBo)\ **Post date:** [July 24, 2018, 11:32pm UTC](https://community.cartalk.com/t/new-car-radio-wont-turn-on/121636/2 "2018-07-24T23:32:33Z")
Aftermarket radio? Are you using a vehicle-specific wiring harness adapter? What about the inline fuses in the radio’s wiring harness? ---
**Author:** ![Randyyo](https://avatars.discourse-cdn.com/v4/letter/r/8dc957/32.png) [@Randyyo](https://community.cartalk.com/u/Randyyo)\ **Post date:** [July 24, 2018, 11:42pm UTC](https://community.cartalk.com/t/new-car-radio-wont-turn-on/121636/3 "2018-07-24T23:42:52Z")
Yes aftermarket radio, i am using a vehicle-specific wiring harness adapter and it should be the correct one as it was recommended by crutchfield and a few others who have installed aftermarket radios in there cars. What is an inline fuses on the radios wirining harness? i only see fuses on the radio itself, and those are good. ---
**Author:** ![COROLLAGUY1](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/corollaguy1/32/7575_2.png) [@COROLLAGUY1](https://community.cartalk.com/u/COROLLAGUY1)\ **Post date:** [July 24, 2018, 11:45pm UTC](https://community.cartalk.com/t/new-car-radio-wont-turn-on/121636/4 "2018-07-24T23:45:09Z")
Could be a defective radio. It happens sometimes ---
**Author:** ![Randyyo](https://avatars.discourse-cdn.com/v4/letter/r/8dc957/32.png) [@Randyyo](https://community.cartalk.com/u/Randyyo)\ **Post date:** [July 24, 2018, 11:48pm UTC](https://community.cartalk.com/t/new-car-radio-wont-turn-on/121636/5 "2018-07-24T23:48:38Z")
It wouldnt make sense if im not getting power from my wiring harness though. I figured I would work from wiring to radio before I determine its the radio. ---
**Author:** ![NYBo](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nybo/32/17281_2.png) [@NYBo](https://community.cartalk.com/u/NYBo)\ **Post date:** [July 24, 2018, 11:50pm UTC](https://community.cartalk.com/t/new-car-radio-wont-turn-on/121636/6 "2018-07-24T23:50:11Z")
Check the pins on the adapter plug to make sure none are bent and not making contact. What year is your truck? ---
**Author:** ![Randyyo](https://avatars.discourse-cdn.com/v4/letter/r/8dc957/32.png) [@Randyyo](https://community.cartalk.com/u/Randyyo)\ **Post date:** [July 24, 2018, 11:58pm UTC](https://community.cartalk.com/t/new-car-radio-wont-turn-on/121636/7 "2018-07-24T23:58:46Z")
I checked the pins and they look good. The year of my truck is a 2015 ---
**Author:** ![NYBo](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nybo/32/17281_2.png) [@NYBo](https://community.cartalk.com/u/NYBo)\ **Post date:** [July 25, 2018, 12:05am UTC](https://community.cartalk.com/t/new-car-radio-wont-turn-on/121636/8 "2018-07-25T00:05:44Z")
There may be an issue with the truck’s CANBUS system not recognizing the radio. You may have to use an alternate power source, like the accessory outlet (“cigarette lighter”) feed. ---
**Author:** ![Randyyo](https://avatars.discourse-cdn.com/v4/letter/r/8dc957/32.png) [@Randyyo](https://community.cartalk.com/u/Randyyo)\ **Post date:** [July 25, 2018, 12:11am UTC](https://community.cartalk.com/t/new-car-radio-wont-turn-on/121636/9 "2018-07-25T00:11:07Z")
Thank you, ill try that. As i was looking at the pins from my harness, I tested the wires for resistance. Yellow and ground wire read less then 1 OHM but the red wire was weird and I couldnt read any resistance from any of the pins. The red wire is a much smaller pin then the yellow and i thought that was weird ---
**Author:** ![BillRussell](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/billrussell/32/3179_2.png) [@BillRussell](https://community.cartalk.com/u/BillRussell)\ **Post date:** [July 25, 2018, 12:14am UTC](https://community.cartalk.com/t/new-car-radio-wont-turn-on/121636/10 "2018-07-25T00:14:40Z")
> [@Randyyo](#): > > I couldnt read any resistance from any of the pins That probably means the wire is open, not connected to anything. ---
**Author:** ![Randyyo](https://avatars.discourse-cdn.com/v4/letter/r/8dc957/32.png) [@Randyyo](https://community.cartalk.com/u/Randyyo)\ **Post date:** [July 25, 2018, 12:27am UTC](https://community.cartalk.com/t/new-car-radio-wont-turn-on/121636/11 "2018-07-25T00:27:26Z")
Unlucky, nothing I really dont want to cut it open and see what is going on with it. ---
**Author:** ![Randyyo](https://avatars.discourse-cdn.com/v4/letter/r/8dc957/32.png) [@Randyyo](https://community.cartalk.com/u/Randyyo)\ **Post date:** [July 26, 2018, 1:50am UTC](https://community.cartalk.com/t/new-car-radio-wont-turn-on/121636/12 "2018-07-26T01:50:20Z")
Hey all, Dropped by to give you all an update, my idiot self didnt put the multi meter onto DC. Everything is reading fine, so its most likely the radio failed. ---
**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:** [July 26, 2018, 2:12am UTC](https://community.cartalk.com/t/new-car-radio-wont-turn-on/121636/13 "2018-07-26T02:12:12Z")
I can vouch personally OP isn’t the first to forget to double-check the DC/AC setting on the meter … lol …