I have a 1991 crysler laberon. And I went to change my back drum brakes. I got the brakes off just fine and I got them unhooked from the Ebrake line and spring. The problem I'm haveing is compressing that spring back far enough to get the clip back on with the brake pad. Autozone supposedly has a tool but it's 15.00 or so. Just to double check it is my emergency brake line. You must compress the spring on the wire in order to clip the brake pad on.

Cables may be seized. Take off the rear drums and check the shoes. Lube or replace the cables and readjust the e brake.

pull the wheels off and check the brakes if drum brakes possible breakage if the retaining components or also check cables and connectors

Was the back brake a disc or a drum? If its a drum u have to adjust it by opening a little hole with a rubber cap behind the brake drum try use of a brake tool if u got alot of extra money to spend or a flat screw driver will do if its a disc most of the time the adjuster is behind the hand brake lever u can tighten the nut that pulls the cable

No fuel delivery is fine im sure i was having same issue thought the same thing so i changed fuel pump. Still same thing try checking your rear drum brakes under neath the rotor that are for your emergency brake your ebrake is sticking inside the drum everything is old and prolly needs replaced try checking the brakes jack it up and try turning one rear wheel then the other one wen ebrake is down and wheels are in the air the rear wheels should spin freely if not then the drum brakes r sticking check it out like isaid i had same issue and spent money that didnt need to be spent

its pretty simple

Remove the drive shaft

remove the tires

remove the calipers and rotors if rear disk and then remove the ebrake shoes/cables.

If rear drums remove the drums. remove the shoes and the e brake cable. remove the backing plate bolts. remove backing plate from axle and support with a piece of wire from the frame being careful not to distort the brake line.

remove the bolt that holds the breather an brake junction to the axle.

remove the break line from the tabs (may not have them).

remove the shocks from the axle.

remove the u-bolts from the axle.

pull the axle out.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Make sure that the new shoe is not defective. Match the up. I had the same issue once and the new shoe was different.

On the LeBaron, the voltage regulator should be mounted under the hood on the passenger side, mounted on the firewall in the upper corner. Hope this helped and best wishes.

check fuse box again and change fuse for dash lights only .

Your brake shoe lineing could be worn or could be glazed which would make them hard like a rock and can not hold the drums any more and if your drums are worn out, that would also make your back brakes seam like there not working. 
You can try re-adjusting then by backing up 7 to 10 time and applying full break application. That should work if the self adjusters are still working. 
Good luck and hope this helps

just wanted to stop to offer some tips. I just put in new brakes on last night. I too had the same problem. The brakes were fine, but I replaced them anyway. The drum seem fine, and my emergency cable was a bit loose too. What you can try is hiting the ebrake while going in reverse or in drive. It may help. If not, adjust the ebrake cable will be needed, it not too hard to do. It should be by the rear tires towards the center.