91 s10 2.5L

e-brake handle broken...
for some reason, my e-brake dummy light was permnently lit up, although it didnt feel like it was when i was driving. now that same light has turned into flashing on and off, with about a second pause between each flash. also my service engine soon lite comes on when im drivin over 80 kms an hour.

just wondering what the flashing of the e-brake light might mean? thx