On vehicles with an automatic transmission, voltage is applied from the TRN-B/U fuse to the transaxle range switch when the ignition switch is in one of the following positions:

On vehicles with a manual transmission, voltage is applied from the TRN-B/U fuse to the back-up lamps switch when the ignition switch is in one of the following positions:

When the transaxle is in the REVERSE position, voltage is applied to the following lamps:

The above lamps are permanently grounded.

When voltage is applied to CKT 24, the back-up lamps are on.