1928 Cadillac - GM Heritage Center

ELECTRICAL 55
Fig. 2
Electrolock from front of instrument board.
To remove, unlock and take out set screw
Fig. 1
Electrolock used on Cadillac 341-A and LaSalle 303
For service on distributor, removeElectrolock with
distributor or use fixture shown in Plate 2 7, Fig. 6
Spring contacts
Sliding contacts
Lock cylinder
Fig. 3
Electrolock switch with casing and cylinder removed
Fig. 4
Electrolock locked.
No current flowing to coil.
Coil and distributor grounded
Fig. 5
Electrolock unlocked.
Terminals 1 and 2 connected by contact on
slide. Heavy line indicates flow of current
Fig. 6 Fig. 7
Never attempt to wire around the Electrolock Never remove the lock cylinder without disconect-
A"jumper" between terminals 1 and 3 will cause ing the feed wire. No. 1 contact will touch the
a short, damaging both switch and distributor lower-contact and short through the distributor
Locking ball Locking plunger Released position Control wire y" 1-^o Ammeter
Casing
Switch contact 2-To Coil Lock cylinder
Transmission shifter shafts
Fig. 8
Transmission lock and ignition switch on Cadillac 341-B and LaSalle 328
Plate 28. Electrolock and dual ignition and transmission lock.