I am helping a guy swap in a SB chevy in his 93 YJ that came with the 4 banger. The previous owner yanked the engine out and unplugged the main engine harness which I assume had the leads for the temp and oil psi senders... we want to use the factory guages for now and need to know what color wire the temp and oil psi senders connect to.

Thanks

I would suggest going to the dealership and getting an actual service manual for that vehicle or at least a Chilton's manual from your local auto parts stores. They have wiring schematics in the back that will show you everything you need.

I'm 99% certain that the oil is purple, and 50% certain that the coolant is orange/black stripe. look at the sensors on the old engine. the colors should be the same. all the dash gauges should route thru an oval grommet in the center of the firewall, not the square bulkhead connector on the driver side of the firewall.

Originally posted by Sundowner
I'm 99% certain that the oil is purple, and 50% certain that the coolant is orange/black stripe. look at the sensors on the old engine. the colors should be the same. all the dash gauges should route thru an oval grommet in the center of the firewall, not the square bulkhead connector on the driver side of the firewall.

he is correct. 99% sure on the color too but they come through the center of the fire wall.

look onthe back of your gauges and follow the printed circuit to the wire connector on the back of the gauges. then just figure out which pin it is and you have your color.

my question is if you coulnd't figure out how to follow the wire of the back of the gauges, how are you doing an engine swap???? :flipoff2:

Originally posted by GaJeep94YJ

My question is if you coulnd't figure out how to follow the wire of the back of the gauges, how are you doing an engine swap???? :flipoff2:

You don't want to make me mad boy! I did my first V8 swap when I was 15 so don't fawk with me. I just walked into this swap and am trying to help somebody out, this Jeep is a mass of cut harnesses and general chaos.

BTW I traced all the wires and it is ready to go, thanks for the help Sundowner......

I have forgotten more about Jeeps than you will ever know GaJeep94YJ... :flipoff2:

someone's a little touchy! geese it was a legit question.

nice site though and I like your roll bar. wish I would have seen your idea about the front hoop before I did mine...oh well

Originally posted by GaJeep94YJ
someone's a little touchy! geese it was a legit question.

nice site though and I like your roll bar. wish I would have seen your idea about the front hoop before I did mine...oh well

Sorry about the kneejerk reaction there... two other posts I provided information to that day some butthole comeback with smart ass comments and I was fed up at when I got to that post.. :(

Thanks for the comment about the roll cage.. I am pretty proud of it..

Later

no problem man. I just see alot of people getting in over their head and I have to asky why....I shouldhave looked at your screeen name to figure it out. :)


I swapped out my entire drive train. for some reason I thought I could do it in three weekends. three months later I was finally finished!!!