See my profile, and other CJ 5/7 posts.
On 258---6. Temp gauge sending unit is located either on the FRONT OF THE HEAD----OR beside the valve cover DRIVERS SIDE, ON TOP OF THE HEAD. Closest to the firewall
On 1976 up, Wire is purple and may have a stripe (find it by sender, regardless)
If you turn your key ON, Remove the wire from the sender----then GROUND it using a jumper wire, paperclip, nail, ETC!YOUR GAUGE WILL PEG OUT, if all is good ( you then know its a BAD SENDER, in the head) You have just fooled the gauge into sensing MEGA Overheat.
On 1976 up, the purple wire, somehow makes it inside and IS PURPLE on the sender side of the gauge. (If your color is different--it may be same color on back of the speedometer[temp gauge] )
What are we doing exactly, do we have a rats nest, trying to figure it out. Or is all good except for this?
If you will describe the YOUR speedo and gauges (use mirror to describe the backside), I have a Speedo---out, in stoage (for '76 up), can send pics of wire locations---and how to test the gauges. IF OURS ARE ALIKE ENOUGH.
Have many Jeep manuals.
Wednesday, June 9th, 2010 AT 11:27 PM