4 wire cruise switch
 

I need the function for the 4 wires in the early GM cruise switch. I've got everything else lined up, but I need to verify which wire does which function for the yellow, red, green, and brown wires for this lever. In some old posts, I've seen switches that have a blue wire instead of brown. Anyone?

Re: 4 wire cruise switch
 

Are you sure it's a factory switch? Factory switches don't have a brown wire, but many aftermarket ones do. What are you hooking this up to?

Re: 4 wire cruise switch
 

I went through the same thing. Go to the wreckers and grab the turn signal handle (with cruise). Take this handle apart and remove the cruise switch. It is identical to the 3 wire switch that was used on our Blazers, except it is 4 wire, and will fit perfectly in the old handle.

This is the style of handle you're looking for--->https://dgzmd7u6z2by7.cloudfront.net...116487_490.jpg

Re: 4 wire cruise switch
 

Check this link. It shows the cruise switch I'm talking about; http://chevythunder.com/fuel%20injec...ntrl%20pg2.htm

EDIT; I misread your question and though you had the old 3-wire. Never mind !!! :-)

Re: 4 wire cruise switch
 

ls1nova71, yes, it's an aftermarket switch. Its going in my Jimmy, which has a 6.0 LS motor and it's DBW. I've got my TAC wires set aside, but just don't know what the function is for the switch wires.

Re: 4 wire cruise switch
 

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See if this thread will help...

http://67-72chevytrucks.com/vboard/s...d.php?t=511477

LockDoc

Re: 4 wire cruise switch
 

This is my switch:

Attachment 1716851

Re: 4 wire cruise switch
 

This is the schematic I used when I did my 5.3 swap.

https://encrypted-tbn0.gstatic.com/i...pdCypASCpSO0tQ

Re: 4 wire cruise switch
 

This should have the info you seek.... http://67-72chevytrucks.com/vboard/s...ght=cruise+dbw

Re: 4 wire cruise switch
 

It appears that some people had to use the relays and some didn't. Are the relays just if you're running LED brake lights?

Re: 4 wire cruise switch
 

The relays are for when you're using an aftermarket switch. If you're using a factory switch they are normally open switches, but aftermarket switches are normally closed, so the relays are used to reverse the switches. You will need them to use the switch you have, just wire it like the way it shows in the link I provided.

Re: 4 wire cruise switch
 

Are you using a factory switch or a dash mounted one?

Re: 4 wire cruise switch
 

I'm using an original Blazer turn signal handle with a late model 4 wire switch installed into it. It's wired directly to the TAC module.

The schematic of the switch I posted was to show the OP the colors of the wires and their function .

Re: 4 wire cruise switch
 

It's aftermarket

..

Re: 4 wire cruise switch
 

I know, but the schematic I posted has the same color wires and shows what each wire does. 5 minutes with a multimeter and you'll figure out how to wire it up.

Re: 4 wire cruise switch
 

Thanks man!

Re: 4 wire cruise switch
 

Wire coloring is irrelevant, it's the switches inside that matter, and the fact is that aftermarket column mounted switches are different than factory GM switches. Factory GM switches are normally open type switches, meaning no power flows through them until the switch is activated, either by pushing a button or sliding the switch. Those type can be wired directly to a TAC and will work exactly like factory, because they are. Aftermarket switches, with the exception of the DD dash mounted one, are normally closed switches, so you will be sending power to the TAC all the time, not what needs to happen for it to work. The link I posted shows how to wire in relays to reverse the switches to give the correct signals to the TAC to make it function. If you want to use a column mounted aftermarket switch, be it Dakota Digital, Rostra, or who ever else sells the same switch, you must use the relays, there's no other way around it.

Re: 4 wire cruise switch
 

When you say "factory Blazer", you mean '81-83, not '72, correct? I assume you have one that looks like this.
This is a factory 4 wire switch that was used in the later trucks beforr they went to column mounted dimmer switch columns. It's the only NOS one I have ever had, and before anyone asks, no, it's not for sale.

Re: 4 wire cruise switch
 

Yup, that's the same switch. Not sure what year it is, but it was a factory 3 wire switch, and was under the impression it was an original 67-72 piece (not that it matters). I removed the guts and swapped out the internals for late model 4 wire.
Again, the wiring schematic I posted of the 4-wire switch above with CORRECT colors was for the OP to have something to reference to when checking his aftermarket one. Most aftermarket companies use GM wiring colors as standard, and chances are pretty good that his aftermarket switch will work perfectly without the need of relays (assuming his switch is normally open)
A quick check with an Ohm meter will answer this question.

Re: 4 wire cruise switch
 

My first attempt at wiring the cruise up worked like a charm. Very awesome to have cruise in a 45 year old truck! Thanks fellas. Y'all's instructions were perfect!

Re: 4 wire cruise switch
 

Awesome !! Glad to hear.:chevy:

Re: 4 wire cruise switch
 

So which diagram did you use to wire it?

Re: 4 wire cruise switch
 

Hi All, really nice to see so much info but apparently my steering column is different.. It's a tilt but when I looked at the turn signal to pull it out, it does not have the set screw that I see in the pics posted, mine screws in...? Does that mean there is no way I can get my mine to work with cruise control for my 5.3 Vortech…? I sure hope I don't have to look for another steering column...

Re: 4 wire cruise switch
 

Can you post a pic of what you have? If it's a GM column it should work.