my frend has a 1997 baja 32 outlaw . it has a 4 wire corsa silent choice exaust . it won't pull the exaust closed but if you put the switch on and manually close the selenoids they will stay closed , any help would be great . thanks Tim

http://corsamarine.com/solenoid-testing.aspx

This should help.

My Baja did the same thing. Check the alignment of the linkage- loosen and move it around. If that doesn't work, replace the solenoid.

its all 4 selonoids , they hold but will not pull them in.