2013~2016 CX-5 Reverse Trigger Wire for aftermarket headunit

RG_Flyer · Feb 3, 2016

I know I can run a wire from the backup lights themselves, but before doing that, I thought I would explore whether there is anywhere in the cabin, hopefully around the dash or kick-plate area, to get either a +/- trigger when in reverse.

A search yielded answers for the 3 and 6, and also letting the PAC audio adapter provide it from the can-bus. I don't need most of what the PAC adapter provides, such as integration with the Bose system.

silvercoat · Feb 4, 2016

Typically you can find it in the kicks as well. In most cars that wire will run from the front to the back. Given that I know that by the time it goes into the radio it is data this may change due to the rear BCM which I would assume it runs into.

RG_Flyer · Feb 4, 2016

silvercoat said:
Typically you can find it in the kicks as well. In most cars that wire will run from the front to the back. Given that I know that by the time it goes into the radio it is data this may change due to the rear BCM which I would assume it runs into.

Thanks for the reply. I was wondering the same, considering the rear BCM.
If I have to go all the way back there, I might as well just grab the lamp wire itself. I have a manual transmission, but I suppose there is not a switch for the reverse lights, rather data from the transmission?

RG_Flyer · Feb 6, 2016

I found the Mazda instructions for the OEM backup sensors. The instructions direct the installer to tap into the rear BCM for the reverse signal for that system, so I will do it for what the Pioneer needs also.

silvercoat · Feb 9, 2016

I think it is a safe bet. As with most cars to save weight and complication (lol) our nice analog signals have to go digital.

oran9e · Mar 4, 2016

RG_Flyer said:
I know I can run a wire from the backup lights themselves, but before doing that, I thought I would explore whether there is anywhere in the cabin, hopefully around the dash or kick-plate area, to get either a +/- trigger when in reverse.

A search yielded answers for the 3 and 6, and also letting the PAC audio adapter provide it from the can-bus. I don't need most of what the PAC adapter provides, such as integration with the Bose system.

I've been searching for a reverse signal within close proximity to the stock harness. I came across these links which suggest it's the pin 1M:

1) third picture down in:
http://www.aliexpress.com/store/pro...g-fit-Mazda-Atenza-CX/607693_32393063986.html

2) from another thread here: http://www.mazdas247.com/forum/attachment.php?attachmentid=210242&d=1425421132

3) a thread showing signal reading on the same pin in a Mazda6. http://www.mazdas247.com/forum/show...sensor-wire-found-looking-for-VSS-wire-anyone

Can anyone confirm that 1M is the reverse signal in CX5?

RG_Flyer · Mar 19, 2016

silvercoat said:
I think it is a safe bet. As with most cars to save weight and complication (lol) our nice analog signals have to go digital.

Right, it is an old dog, new trick thing. I bought a 25' spool of 18AWG wire and ran it to the headunit's purple trigger wire. I used all but about a foot of it too.

Trigger wire (purple) military spliced to reverse lamp (+) wire

oran9e, as silvercoat indicates, I think everything analog for a reverse wire remains aft in the CX-5

silvercoat · Mar 21, 2016

I am a bif fan of the direct method. Which always works. I bit of extra work but luckily if you switch your stereo out in the future it is already done.

ikerg · Aug 8, 2016

oran9e said:
I've been searching for a reverse signal within close proximity to the stock harness. I came across these links which suggest it's the pin 1M:

1) third picture down in:
http://www.aliexpress.com/store/pro...g-fit-Mazda-Atenza-CX/607693_32393063986.html

2) from another thread here: http://www.mazdas247.com/forum/attachment.php?attachmentid=210242&d=1425421132

3) a thread showing signal reading on the same pin in a Mazda6. http://www.mazdas247.com/forum/show...sensor-wire-found-looking-for-VSS-wire-anyone

Can anyone confirm that 1M is the reverse signal in CX5?

I checked that pin on a cx5 2013 but I got no signal.
How did you solve it?

Enviado desde mi D6603 mediante Tapatalk

ecexplorer · Mar 11, 2017

Specifically for the 2016 Mazda CX-5, I've found the only solution is to direct-wire or use the PAC harness. I probed every pin while shifting from reverse to neutral, and didn't see a trigger in either of the two larger connectors that are behind (and connect to) the original radio.

ikerg · Apr 4, 2017

ecexplorer said:
Specifically for the 2016 Mazda CX-5, I've found the only solution is to direct-wire or use the PAC harness. I probed every pin while shifting from reverse to neutral, and didn't see a trigger in either of the two larger connectors that are behind (and connect to) the original radio.

Me Too for a cx5 2013. I finally got signal using PAC

if I did help you, please hit "thanks" button

VaporTrail · Apr 10, 2023

https://youtube.com/shorts/0HrpjfUWpjs?feature=share white cable front left footwell is reverse +ve which is much easier to tap into than tailgate harness

2013~2016 CX-5 Reverse Trigger Wire for aftermarket headunit

RG_Flyer

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