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Installing brake controller HELP please

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Installing brake controller HELP please

Old 10-21-2020, 12:59 PM
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Default Installing brake controller HELP please

I'm totally lost on this installation..

Can anyone tell me how these wires go together? At first I just color matched them and it blew that 30 amp fuse I'm pointing at in the pic below. Comes to find out that the colors really don't mean anything.

I can't find any wiring diagrams or anything. I added in that 40 amp fuse after reading that a fuse has to be there for the trailer auxiliary power. Added that fuse, blew immediately when I touched the brakes.

This is on a 2006 Duramax.. As you can see, that brown pigtail plugs in under the dash (pic below) in the 2nd slot from the left. I've already blown 2 fuses trying to figure out how these wires go together and have not even got the light on the controller to come on.

Any help please?? This is whupping my ass.

Thanks in advance






Old 10-21-2020, 01:15 PM
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Update- The 40 amp fuse actually did NOT blow after I took another look at it.

So basically now, I have everything plugged in and wired up, no blown fuses, but my controller is still not lighting up
Old 10-21-2020, 01:22 PM
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Not sure on that model but some models require a trailer with btakes to be hooked up to energize the controller.
Old 10-21-2020, 01:33 PM
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I'd have to go look at mine but I don't EVER trust the colors. Use a multimeter.

Also, throw that brake controller in the trash and buy a Tekonsha digital. Those old timed units, while pretty much bulletproof, are old technology using a timer. The newer stuff uses g-forces to intelligently determine how much brake you need not "one-two-ok 40% brake now" like the one you have. Small investment that makes a world of difference. My 05 HD had one of those in it and I pulled a trailer once (praise the Lord it was empty) and immediately moved my Tekonsha from my 1500 to my 2500. You can even add boost to it to have it slow the trailer down first so it doesn't overload the truck brakes.
Old 10-21-2020, 02:05 PM
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+1on the tekonsha. Only way to go.
Old 10-21-2020, 03:28 PM
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Originally Posted by RockportFisher View Post
Not sure on that model but some models require a trailer with btakes to be hooked up to energize the controller.
I agree with this. I have a different make/model of brake controller, but it is the similar timed style, and it only lights when a trailer with brakes is plugged in. I can only adjust the braking power with the knob after the trailer is plugged in.
Old 10-21-2020, 06:02 PM
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https://www.etrailer.com/multi-produ...odel=Silverado

Order this. It plugs right in. Easy as pie. Send me a PM if you need help.
Old 10-21-2020, 11:29 PM
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Thanks for the replies not answering what I need to know. I notice that as a common occurrence on here.

Rockport and Little Giant, I have the same one in another truck and it lights up anytime I hit the brake with or without trailer. I know I don't have something hooked up correctly, I just can't narrow it down. This one came off a truck I just sold, so switching it to this truck. Stupid me didn't pay attention to which color went where when I took it off the old truck.
Old 10-21-2020, 11:34 PM
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And by the way, I've run the Tekonsha's before and yes, they are awesome. I don't even own a trailer anymore with trailer brakes..... I'm literally putting this one on this truck for the hell of it, and for the situation that I may tow someones rig with brakes

If I was towing a trailer with brakes regularly, yes you folks are right.. I'd be going after a T
ekonsha
Old 10-22-2020, 03:09 AM
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Are you sure you have the plug in the right spot on the board?

I also have an 06, and will look at mine this morning
Old 10-22-2020, 03:52 AM
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Not sure if this applies but I remember not only having to add the fuse in order to get the trailer 7 pin plug +12V but also having to have to connect the wire @ the distribution fuse box under the hood. May or may not have something to do for the getting 12V on the trailer brake controller harness.
Old 10-22-2020, 03:54 AM
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Also you need to check for voltage across the red and black wire.
You need a volt meter or at the least a test light.
Old 10-22-2020, 03:58 AM
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Originally Posted by aplusmiami View Post
Also you need to check for voltage across the red and black wire.
You need a volt meter or at the least a test light.
No sir.
White=ground
Black=+12v
Blue=out to trailer brakes
Red=connects to stop light signal
Old 10-22-2020, 04:04 AM
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Originally Posted by aplusmiami View Post
Not sure if this applies but I remember not only having to add the fuse in order to get the trailer 7 pin plug +12V but also having to have to connect the wire @ the distribution fuse box under the hood. May or may not have something to do for the getting 12V on the trailer brake controller harness.
This is a possibility. Look under or around the master cylinder for a harness coiled up. My 06 GMC Duramax had 2 wires with ring terminals in wire loom that needed to be connected to the fuse box/ power distribution block. One was for the trailer brake and the other was the +12V charge line to the trailer plug.
Old 10-22-2020, 09:00 AM
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when i installed mine, i didnt have to connect any wires, just plug the module into the board and the wires went to the brake controller.
Old 10-23-2020, 05:17 AM
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Originally Posted by Vantaredoc View Post
No sir.
White=ground
Black=+12v
Blue=out to trailer brakes
Red=connects to stop light signal
Yes you are correct -

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