Wiring Diagram for Digital Relay Box for Advent Air

Updated 12/22/2025 | Published 09/30/2024

Products Featured in This Question

Electric Heat Strip for Advent Air RV Air Conditioners - 5,500 BTU

(168)

$73.99

Question:

Id like to know what works these gray wires have in the Advent Dijital Box, because Id like to install a heat strip to my AC Advent and Id like to know how it actually works and for that connection to be used.

asked by: Jose L

Expert Reply:

Hey Jose, I attached a diagram for the wiring harness of the Replacement Digital Relay Box # PXXACRG12RB that shows that the gray wire runs to the upper unit. The heat strip part # ACMHD doesn't have wiring that you would have to run as it basically just plugs right into the upper unit with a plug and play connector.

expert reply by: Jameson C

Wiring Diagram
(click to enlarge)

Jameson C.

12/22/2025

Hey Jose, how did things go with adding the heat strip to your Advent AC? Did the plug-and-play connection work smoothly with the upper unit? Your update could make it easier for others trying the same setup.