Temp gauge quandary (Page 2/2) steve308 APR 19, 09:06 PM OK the update, but first, thanks again to all. It appears that in a senior moment and dispite my 'fool proof' wire marking I did indeed cross the wires when I installed the pigtail onto the sensor. Switched the wires and all is as it should be. olejoedad APR 20, 07:24 AM Thanks for the update! Glad it was something simple! ArthurPeale APR 20, 10:44 AM quote Originally posted by steve308: OK the update, but first, thanks again to all. It appears that in a senior moment and dispite my 'fool proof' wire marking I did indeed cross the wires when I installed the pigtail onto the sensor. Switched the wires and all is as it should be. except - to actually "fix" the wiring issue, you do have to swap those two wires. But, in addition, there are two wires to swap in the dash display, also. to this day, it's still one of the most satisfying repairs I've done to my Fiero. IDK, I just get a kick out of the temp lamp illuminating properly for the first time ever. olejoedad APR 20, 02:01 PM quote Originally posted by ArthurPeale: except - to actually "fix" the wiring issue, you do have to swap those two wires. But, in addition, there are two wires to swap in the dash display, also. to this day, it's still one of the most satisfying repairs I've done to my Fiero. IDK, I just get a kick out of the temp lamp illuminating properly for the first time ever. Another method, perhaps simpler, is to remove the ground path to the ignition switch by disconnecting the two small diameter light green wires from the ignition switch. They go to the 'G' terminal on the ignition switch and can easily be removed from the ignition switch connector. Insulate the contact that you remove from the plug. This 'fix' will prevent the gage from pegging, but not enable the HOT lamp during BULB CHECK. The HOT lamp will still function in an overheat situation. ArthurPeale APR 21, 10:52 AM quote Originally posted by olejoedad: Another method, perhaps simpler, is to remove the ground path to the ignition switch by disconnecting the two small diameter light green wires from the ignition switch. They go to the 'G' terminal on the ignition switch and can easily be removed from the ignition switch connector. Insulate the contact that you remove from the plug. This 'fix' will prevent the gage from pegging, but not enable the HOT lamp during BULB CHECK. The HOT lamp will still function in an overheat situation. it's pretty easy to swap the four wires - two under the dash gauges, two in the engine bay. I had it done in about half an hour. I've done it on two now and would definitely do it on any I own in the future.