Put a 90+ instrument cluster in an 87GT, now has a few qwirks

cardudeusa

Founding Member
Oct 22, 2002
1,744
5
48
Home of the Florida Gators!
Just got done, went from an 85mph cluster to a 140mph cluster, everything fit just fine and looks good. Well, now I have a few electrical problems, when I start the car the dash lights light up, when I have the key off and turn the high beams on, the fuel pump primes, when I turn the high beams on and the cars running the dash lights go out and the left side of the dash stops working and the turn signal lights light up. Other than that everything else works fine, even checked the speedo and its accurate. Any help appreciated!!