i know that theres a 'vacume canister" (dont know if thats the right term) underneath the battery on my 05. When i installed my phantom fenders, i had to relocate it. Without it connected to the intake manifold, the cruise wouldnt work and niether would the ac.
2014 JKU Sport - Wife's Mall Crawler on 35s. Badlands Winch, 2" Coil Spacers, 1" PA BL
1999 F250 7.3 - 290K Miles and Counting
"I am not going to censor myself to comfort your ignorance."