1969 Rear door courtesy light relay

[George W]

Does anyone know if there is a relay for the operation of the rear door courtesy lights on a 1969 four door ? The rear courtesy lights work when the front doors are opened but they do not turn on when the rear doors are opened. I bypassed the rear door courtesy light switch contacts (that's attached to the door latch mechanism) and the lights still did not come on. This leads me to believe that there's a relay somewhere for this function. I have the 69 TSM for electrical but there's no mention of this in the shop manual. Is there a relay and where might it be located ?