W126 cruise amp interchangeable??

[bhatt]

Hello,

Cruise worked intermittently in my 300SDL but has gotten worse over the last year and now no longer engages. When it did work, it worked perfectly. I've removed the amplifier and resoldered, but it still doesn't work.

Looking at buying a new amp on EBay.. have found some sellers who are selling amps in "working" condition. I would consider GDL or another supplier of good amps, but working cruise isn't really worth more than $50 or so to me (any more and I'll leave it broken!)

Question: Can I use an amp from any other W126 model as long as it had an automatic transmission? Will one from any gas model work also? I've located one from an '85 380SE.. would this work?

Thanks!
Neal