Lights not working, electrcal problem. Need Help!

Hey guys, I posted yesterday about a stalling and bucking problem. I
think I have it diagnosed but I think I screwed up the electrical
system. I plugged in the engine light and it must not have been hooked
up right or had a short in it because the wires started to melt. I got
it unsnapped pretty quick, but when I restarted the engine none of my
driving lights would work. The fuses seem ok and it is only the
headlights, brake lights and the parking lights. The flashers still
work and it looks like everything else does as well. What else could I
check? Could some of the fuse boxes in the engine have been burned
out?
I have a Chilton and Haynes Guide and this just happened so I thought I
would throw it out there. I am going to a junkyard tommorow and there
are a few late 80's and early 90's Cherokees.

Do you think I would need to redo the wiring? Would this be expensive
to get fixed?

I just spent a lot of cash and still have the stalling problem and now
this! I am an idiot!

Also I ran the engine without the TPS and the IAS and it still ran, is
that normal?

Thanks and I appreciate any comments,

Tim K

Ok first things first, what year is your XJ, auto or manual, This helps people diagnose your problems.
What is a motor light?
The lights you describe not working you could have blown the switch on the dash, (need to know what year xj to pull schematic)
you stated the fused seem to be working, did you take a continuaty tester to them or just replaced them with other fuses? Or did they just "look" okay.
let us in on some info and maybe we can help solve you problem.

x2 on all those questions and a few more.
Which wires started to melt?
if you've got a renix rig you've got fusible links coming from the start relay, and those do melt, they're like big fuses.
post the color and location of the wires that started to melt.

Sorry about not putting in that info.

1990 Cherokee Laredo 4.0 L Inline 6

I actually fixed the wiring problem, fortunately it was one of the fusible links.

I am still having some problems with the engine bucking and stalling at low RPMs.

I had a new fuel pump put in but the fuel sender is bad. Also according to my mechanic, I had a lot of buildup in my fuel line so they did a "power flush" through the fuel line. Could the fact that I run out of gas a few times in the past year lead buildup in the fuel line and mess with the injectors.

Other than that the engine is running fine.

Thanks for your help,

Tim K

check the EGR.
then check fuel pressure.