AC wiring question
So i got an ac system out of a 94 yj, my jeep didnt have ac before. does my jeep have the wiring harness under the dash even though i didnt have ac? the fuse box under the hood has a missing slot for a relay. this link MJR Features: Jeep Tech Writeups, Installations & Articles » YJ Aftermarket Air Conditioning Installation shows how to wire it towards the bottom of the page, and dosent seem like they use a relay at all, they hooked it up to the cruise control and wired the evap directly to the drier. is this safe/smart? or should i use Santech/Relay - A/C Connector (MT0911) | Relay - A/C Connector | 1994 Jeep Wrangler 4WD 4 Cylinders P 2.5L MFI | AutoZone.com that thing and just plug in a relay?