5.3L DBW cruise hookup

[BR3W CITY]

Want to verify something before I hook up cruise on mine this weekend. I"ll be using just switches, not a stalk.

For a simple switch setup, I gather that;

1. I run a switched and fuse +12v to a toggle switch, by default, getting 0 voltage in the OFF position. After that switch, I connect to pin 14 on the TAC module.

2. Off the same circuit I just made, I need to tap the 12v AFTER the switch, and run that to the Input side of a momentary switch (open, no voltage until depressed). From the Output side of the momentary, to pin 4 on the TAC.

3. I won't be adding an accell/resume so i can disregard that.

4. I need to hook a wire from the Brake switch to Pin 6 on the TAC.


Thats all correct...right?

So tell me this; I'm already using a 4 post switch for the ls swap, and all 4 already have wires on them. WHICH wire do I need to run to the TAC? The n/o vs n/c confuses me; is the 4post fine, or do I need to add a relay like the above stalk kits?

IF yall could break down that little part for me I'd appreciate it....
I wanna use the old High beam foot button for the cruise switch, and a simply momentary on my switch panel.

[ls1nova71]

BR3W, you have it right, and your brake switch will be fine, and no extra relays are needed. Just hook the wire to pin 6 on the TAC from the "hot when applied" side of the brake switch. The other side is for the TCC and you already have that hooked up so you're good there. The only problem you may encounter is if you have LED brake lights.

[BR3W CITY]

Originally Posted by ls1nova71

BR3W, you have it right, and your brake switch will be fine, and no extra relays are needed. Just hook the wire to pin 6 on the TAC from the "hot when applied" side of the brake switch. The other side is for the TCC and you already have that hooked up so you're good there. The only problem you may encounter is if you have LED brake lights.

Thanks dude. I do have the LED' tails, but they are the "bulb" type that have the resistors in them to operate flashers, I might be able to get away with it. If not, I'll stick a dummy bulb somewhere, unless there is more elegant solution.

[solidaxel]

Do you have a wire diagram for the Dakota Digital surface mount 4 bottom switch HND2?

[cru_zn_29]

Great thread

[MattPSU]

I just picked up this switch from Amazon. Can I wire this up the same as the DD one's in the original post?

https://www.amazon.com/Rostra-GM-Sty.../dp/B008LUTF0C

Thanks - Matt

[ls1nova71]

Originally Posted by MattPSU

I just picked up this switch from Amazon. Can I wire this up the same as the DD one's in the original post?

https://www.amazon.com/Rostra-GM-Sty.../dp/B008LUTF0C

Thanks - Matt

Yes, its the same switch. I'm pretty sure they're made by the same company.

[Hart_Rod]

Originally Posted by MattPSU

I just picked up this switch from Amazon. Can I wire this up the same as the DD one's in the original post?

https://www.amazon.com/Rostra-GM-Sty.../dp/B008LUTF0C

Thanks - Matt

Yes

[cru_zn_29]

I am wanting to install cruise to my gen IV 5.3 4l80e. When reading info about the gen IV system gets confusing.What would better the way to go. Rostra or BCM.

[Hart_Rod]

Originally Posted by cru_zn_29

I am wanting to install cruise to my gen IV 5.3 4l80e. When reading info about the gen IV system gets confusing.What would better the way to go. Rostra or BCM.

Rostra or Dakota Digital would probably be simpler than BCM...

[MattPSU]

So am I wiring it so that the switch connects to this plug? Or am I splicing into the wire between this plug and the ECU?

[ls1nova71]

There should be three wires coming from that plug that go to the switch.

[MattPSU]

I'm finally back on this. I've had it all wired up for months, and just left the fuse out because I wanted to test it somewhere safe first. Well I finally did that tonight, and it's working. Kind of.

It only holds the speed when the switch is on and I hold in the SET/CRUISE button. Any idea what I did wrong? I'm assuming that I have something backwards, but it's been so long since I wired it all up, I can't remember the details enough to trouble shoot it.

Any help would be greatly appreciated!

Thanks - Matt

[ls1nova71]

To use the switch that you have, you need to use relays to reverse the normally closed switches to normally open. Did you wire it that way?

[MattPSU]

Originally Posted by ls1nova71

To use the switch that you have, you need to use relays to reverse the normally closed switches to normally open. Did you wire it that way?

I did. I used two relays and wired them just as you guys suggested. Any idea which one I need to check? Or which wire coming out of the switch is related to that button?

[ls1nova71]

Originally Posted by MattPSU

I did. I used two relays and wired them just as you guys suggested. Any idea which one I need to check? Or which wire coming out of the switch is related to that button?

I honestly don't know, on aftermarket switches its a crap shoot as to which wire does what. You will have to get out a multimeter or test light and test them to find out for sure.