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sprinkles08, ASE Certified Technician
Category: Jeep
Satisfied Customers: 22648
Experience:  Chrysler/Dodge/Jeep Master Certified, ASE Master and Advanced Certified, Trans and Hybrid Specialist
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Grand Cherokee: Installed a 2012 jeep grand Cherokee factory

Customer Question

Installed a 2012 jeep grand Cherokee factory 7 pin tow harness.
Only get reverse lights and tail lights working. No left / right turn signals. Factory harness had multiple wires to hook up, but main 4 were for tail, reverse, left , right turn.
Manual says to hook up to Tipm C5 pins 32 and 15. (park lights & reverse).
The other two wires to Tipm C7 terminals 47 & 48 (left, turn right )
1.) Do you have diagrams for Tipm connector C7 ?
2.) Could pins 47 & 48 be turned off from computer?
Tow harness # ***** says factory must activate but does not say what gets activated.
I'm going to double check my work and make sure I did use pins #47 and #48 on Tipm C1 instead of the correct Tipm C7 47/48.
Submitted: 2 years ago.
Category: Jeep
Expert:  sprinkles08 replied 2 years ago.
Hello and welcome to JustAnswer!
After the wiring is installed the trailer tow brake/turn outputs will have to be turned on using dealer scan tool. It appears you've installed the wiring but haven't had the programming done?