Do you have a swap thread or something? Gonna need probably a lot more info to help, like:
- Where was the swap done?
- When was the swap done?
- Who made the swap kit / harness?
- When was the harness made?
- What year engine is it?
- How is the PCM tuned?
- Which PCM are you using?
Depending on answers to the above, you might be able to do a 2012+ JK 3.6 fan conversion using AEV's kit, but being a 2007 JK your TIPM might not support it (may need a newer TIPM).
Your best bet would be to simply contact the kit manufacturer or installer and see if they can help.