Heathkit SG-8 Manual page 11

( ) Connect a bare wire from BR3 (S) to C3 (S).
( ) Connect a bare wire from BR4 (S) to D3 (S).
( ) Connect coil E3 from BF5 (S) to BR5 (S).
( ) Cover one bare lead from coil E3 with a 3 1/2" length of sleeving, and connect to D1 (S).
Leave the other end free.
( ) Connect coil Ei from BF6 (S) to CC3 (S)
{ ) Connect coil E2 from BR6 (S) to CC4 (S)
This completes the sub-chassis
l
( ) Install 3/8 rubber grommets in holes A, C, D, E, F and P.