1981 ECM ground location

[sd81]

Hi everyone. I have a problem that I need to check the ground to the ECM and I don't kow where to look without stripping the whole car. Does anyone know where it is?

 

[bill81vette]

you could check around the parking brake frame/metal,covering.
there looks like it might be in that area,
but you never know where they actually put them.