LS Swap Dually Questions - First Timer

[Android04]

Thank you everyone for the replies. The swap has 115k miles on it and have drove the donor vehicle around for a couple weeks to make sure no issues. Great Oil Pressure, no over heating, etc.

As for balling on a budget, that is the case two kids and multiple vehicles but I do think I plan to go with a BP Harness. I'm also just going to order a 87 tank to avoid the issues once the motor is in. I have a pretty tight budget I've set aside so Dakota's are way out the window. I know all of my gauges work, so now that is my game plan to get everything needed to make those work.

What about cruise control? My 85 has it and in the harness break down you can pick with or without CC. I plan to call them once I get some downtime from work this week. Dingo mounts weren't that expensive so I may look at Tejay's and just sell the Dingo's.

Again thanks everyone for the help so far. Getting closer and closer..

[ls1nova71]

Originally Posted by Android04

What about cruise control? My 85 has it and in the harness break down you can pick with or without CC. I plan to call them once I get some downtime from work this week.

A 2004 Yukon will be DBW, and an '85 Chevy truck with factory cruise will already have the switch you need. If the swap harness has the cruise control wires, it's as easy as hooking them up to your switch already in the truck. Under the dash where the cruise switch wiring plugs into the underdash harness you will find there are 4 wires in that connector. Basically you would need to cut the gray, dark green and dark blue wires there and wire them into the wires provided in the LS harness. The colors will probably be similar, but if they aren't, they should at least be labeled. Gray will go to the 'on/off' wire, dk green to the 'resume/accel' and dk blue to the 'set/coast' wire. The fourth wire will be pink and needs to be hooked to an ignition source so that it has 12v whenever the ignition is on. You "shouldn't" have to do anything with it, but you never know what has been done to a truck in 35 years, so you would have to verify it to be sure.

[Android04]

Originally Posted by ls1nova71

A 2004 Yukon will be DBW, and an '85 Chevy truck with factory cruise will already have the switch you need. If the swap harness has the cruise control wires, it's as easy as hooking them up to your switch already in the truck. Under the dash where the cruise switch wiring plugs into the underdash harness you will find there are 4 wires in that connector. Basically you would need to cut the gray, dark green and dark blue wires there and wire them into the wires provided in the LS harness. The colors will probably be similar, but if they aren't, they should at least be labeled. Gray will go to the 'on/off' wire, dk green to the 'resume/accel' and dk blue to the 'set/coast' wire. The fourth wire will be pink and needs to be hooked to an ignition source so that it has 12v whenever the ignition is on. You "shouldn't" have to do anything with it, but you never know what has been done to a truck in 35 years, so you would have to verify it to be sure.

Perfect! That's what I like to hear. Thank you for the knowledge