The /usr/lib/autofs/autofs-ldap-auto-master provides a number of command 
line options to help the program find your auto.master map if it's not 
in the default location on your LDAP servers, however, the 
/etc/rc.d/init.d/autofs script does not have any mechanism to pass in 
these command line options.

Attached is a patch (derived from Fedora Core 5's autofs-4.1.4-16.2.2 
package) that adds an $LDAPAUTOMASTER variable to the 
/etc/sysconfig/autofs file and the same variable to the 
autofs-ldap-auto-master command in the init script.

Jeff Bastian