Reverse lights/backup camera/rocker switch questions... - JeepForum.com
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post #1 of 21 Old 11-21-2019, 04:35 AM Thread Starter
sycboi
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Reverse lights/backup camera/rocker switch questions...

I just installed a set of Savvy LED taillights on my TJ and while I was at it I decided to install a backup camera on the tailgate. I understand how to wire the camera into the Jeep and have it come on when I put the gear selector in reverse (tapping into the reverse wire at the taillight harness). What I was wondering is can I keep that function and also have it wired into a rocker switch on my dash so I can flip the switch and turn the camera on at any time? I was considering buying one of the aftermarket rocker switches that fits into my dash switch panel. I believe they are 3 wire (power/load/ground). Any help will be appreciated!


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post #2 of 21 Old 11-21-2019, 07:44 AM
2jhanna
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Yes, you can do that. Using the switch to control a relay will isolate the 2 modes of operation.

I am multi-talented, I can talk and piss you off at the same time.

jhanna
denton county, tx
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post #3 of 21 Old 11-21-2019, 07:56 AM Thread Starter
sycboi
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Quote:
Originally Posted by 2jhanna View Post
Yes, you can do that. Using the switch to control a relay will isolate the 2 modes of operation.
I’ve read a couple dozen pages trying to find a schematic outlining what I am describing. I had already came to the realization it can only be accomplished by wiring in a relay. I guess my next step would be to ask exactly how all that would be wired together and make it functional...

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post #4 of 21 Old 11-21-2019, 08:44 AM
2jhanna
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You will want to get a 5 terminal relay ( not a 4 terminal).


Terminals 85 and 86 are the control pins, which will be run by your locker switch.

Terminal 30 will be the camera control (or camera on) signal to the camera.

Terminal 87a, will be from the reverse circuit control.

Terminal 87 with be the control from the rocker switch, either 12v or ground depending on what the camera control needs.

I am multi-talented, I can talk and piss you off at the same time.

jhanna
denton county, tx
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post #5 of 21 Old 11-21-2019, 09:06 AM Thread Starter
sycboi
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Quote:
Originally Posted by 2jhanna View Post
You will want to get a 5 terminal relay ( not a 4 terminal).


Terminals 85 and 86 are the control pins, which will be run by your locker switch.

Terminal 30 will be the camera control (or camera on) signal to the camera.

Terminal 87a, will be from the reverse circuit control.

Terminal 87 with be the control from the rocker switch, either 12v or ground depending on what the camera control needs.
Thank you for that! The closest schematic I found was using a 4 terminal relay, but they were wiring in for front fog lights...

When you say “Terminal 87a, will be from the reverse circuit control“, can/should that come from the same splice where I attach the camera trigger wire at the taillight harness? Or am I misunderstanding and the camera will go to the relay and then back to the taillight reverse wire?

Sorry to sound so lost. For whatever reason relay wiring confuses me...

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post #6 of 21 Old 11-21-2019, 11:07 AM
2jhanna
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I can draw you a simple diagram and post. But,

first off, you say your switch is a 3 terminal, power, load, and ground. Is it a lighted switch ?

Second, are you currently using the reverse light lead from the harness to control the camera, meaning it is 12v activated?

I am multi-talented, I can talk and piss you off at the same time.

jhanna
denton county, tx
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post #7 of 21 Old 11-21-2019, 11:23 AM
2jhanna
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Maybe a little sloppy, but I got to be somewhere soon. If yes to above questions.
Attached Thumbnails
IMG_2486.jpg  

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denton county, tx
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post #8 of 21 Old 11-21-2019, 12:07 PM Thread Starter
sycboi
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Quote:
Originally Posted by 2jhanna View Post
I can draw you a simple diagram and post. But,

first off, you say your switch is a 3 terminal, power, load, and ground. Is it a lighted switch ?

Second, are you currently using the reverse light lead from the harness to control the camera, meaning it is 12v activated?
1) Yes it has an indicator light, but only showing when it’s in the on position. Yes it is a 3 wire power/load/ground switch...

2) I haven’t tapped into the reverse wire as of yet, but yes, that is how it says to install it if one would want the camera activated when the vehicle is shifted into reverse...

3) You have been a huge help! I cannot thank you enough good sir!

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post #9 of 21 Old 11-21-2019, 02:14 PM
2jhanna
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Glad to help and post up results for next person. You can get a 5 terminal relay from any car parts store, and for the switch power feed, I'd use the same power source/feed that you're using for the camera circuit. That way all components are under the same related fuse.

I am multi-talented, I can talk and piss you off at the same time.

jhanna
denton county, tx
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post #10 of 21 Old 11-21-2019, 09:26 PM Thread Starter
sycboi
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Quote:
Originally Posted by 2jhanna View Post
Glad to help and post up results for next person. You can get a 5 terminal relay from any car parts store, and for the switch power feed, I'd use the same power source/feed that you're using for the camera circuit. That way all components are under the same related fuse.
Excellent. Will do. May take a few to report back as I am assembling the entire Jeep, but I will update the thread in time. Thank you again!

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post #11 of 21 Old 11-21-2019, 10:20 PM
2jhanna
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This should be a piece of cake compared to what you've done to your TJ.

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jhanna
denton county, tx
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post #12 of 21 Old 11-22-2019, 02:35 AM Thread Starter
sycboi
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Quote:
Originally Posted by 2jhanna View Post
This should be a piece of cake compared to what you've done to your TJ.
I think it’s one of those things where I’ve just never done anything with relays so it’s always been a mystery to me. Once I set my mind to do something I am very meticulous to learn everything I can. You’ve helped me in a big way. My learning curve was fast tracked thanks to you 🙂

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post #13 of 21 Old 11-22-2019, 03:00 AM
Thymopathy
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Yes, you can do that.
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post #14 of 21 Old 11-22-2019, 12:42 PM
2jhanna
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Sycboi, another option, if you're not dead set on a piticular switch,

If you could find a switch with a "center off" position. You wouldn't need a relay. You could have,

Up= camera on
Center= camera off
Down= reverse operation.

I am multi-talented, I can talk and piss you off at the same time.

jhanna
denton county, tx
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post #15 of 21 Old 11-22-2019, 01:29 PM Thread Starter
sycboi
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Quote:
Originally Posted by 2jhanna View Post
Sycboi, another option, if you're not dead set on a piticular switch,

If you could find a switch with a "center off" position. You wouldn't need a relay. You could have,

Up= camera on
Center= camera off
Down= reverse operation.
The only factory style switch I am finding are the 2-position on/off rocker switches. I don’t mind the relay setup. I’ve already got it all laid out. I’ll probably have a couple follow up questions before I actually squeeze the crimpers though, lol...

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