Can anyone give me a ballpark figure on what it costs to add aux. hyd line to a deere 690ELC? Is there a kit available, or would it be best to find one at a salvage yard?
Go to the salvage yard. What part of the world are you located in? I have some ideas and contacts.
go new, about 5k plumbed out to the stick.
The easiest way to do this, is get a kit from Allied Construction Products. And there should be a dealer somewhere in your area that is a Allied dealer, you can look on the Allied website to see who is a dealer in your area. The kits are specially made for each machine so they will be a perfect fit. Allied kits http://www.alliedcp.com/products/install.asp Allied dealer search page http://www.alliedcp.com/partners/dealers.asp
Aux Hydr. Call salvage yards or try the Allied kits. Just the factory Aux. valve from John Deere is over $4000 and that is not the controls or lines. Each line is over 500 dollars each.