need help in el paso w/ turbo
 

I did a engine swap with a 87 t2 and a 88 gtu, everything is all hooked up. But i have not been able to get the car running because of electrical problems as soon as i hook up the negative battery terminal it blows and grounds off there connections and pretty much smokes the wires. i been messing with this stuff for 3 weeks and i suck at fixing this stuff. if anybody wants a free trip to el paso to assist me with this would be helpful but i think i might just have to take it to mazda and let them figure out the problem....how much do you think mazda dealer will charge me to fix electrical woes.:confused:

Arm and leg. Sorry 'bout that. Both cars turbo??? Any wire in particular that is singed??? Color. Location??