Join Date: Aug 2010
Location: Prairie Village
The plug by the firewall is almost definately for the Coolant Level Sensor. If you do a quick search on "Coolant Sensor Bad" you will be happy that you have nowhere to plug this in.
98 Platinum 5.9 Limited (My DD); 98 Slate 5.9 Limited (Son's DD); 98 XJ Stock 4.0 Classic (Disappeard in the Middle of the Night); 97 TJ Sport 4.6L I6 Stroker, 4.5 in. Teraflex Long Arm, 35s (Sold), Detroit Rear; 89 XJ Stock 4.0 Laredo (Wife Totaled RIP); 85 CJ7 Basically Stock 4.2 (Sold); And a few others...