4kq acting strangely when soaked!

[rjandrew@post.cis.smu.edu (R Justin Andrews)]

 Hello all...
I have an '86 4kq and was drving in some pretty wet weather this evening..
It started to cut out and I would have to keep the pedal floored and it would 
finally catch and take off (with clutch depressed)... I checked dist. cap
can rotor both appeared fine (no dampness)
The thing that irritated me the most was the center diff lock light 
was flickering on and off... What in the world does this mean???
Vacuum leak possibly??? Then when I tried to lock it it would not 
light up but seemed to be locking....
Electrical gremlins possibly???

TIA!
Rich Andrews
rjandrew@post.cis.smu.edu