What would cause engine failure, headlamp failure, when vehicle is put in revers on 1990 Chevrolet Suburban 2500

We have already diagnosed the truck with starting fluid Ignition works but immediately quits. Incidentally no headlight power to the main switch? ODB port also has no power, I suspect it is through a power circuit short or relay problem but i also suspect the shifter itself, i tried finding neutral in it and turning motor but wont engage started. There seems to be excessive play in the shifter on the tree... 2-3" in park, i havent driven or worked on a chevy of its like since 2000 since then ive stuck to 1990-1993 fords with straight six's any inpuit would be appreciated

by in Newtown Square, PA on January 30, 2013
1 answer
ANSWER by on January 30, 2013
maybe you have an electrical issue