What Function is The Yellow Wire On The 7-Way # H20046 Connecting To In a Junction Box?
Updated 02/17/2026 | Published 06/22/2024
Question:
replacing a 7 pin wire on a camper but what colors in the junction box does the yellow wire connect to?
asked by: Lori L
0
Expert Reply:
The yellow wire on the Hopkins 7-Way RV Style Connector # H20046 is for the reverse lights. Depending on how the trailer was wired this could connect to either a yellow wire or purple wire in the junction box. I typically recommend verifying the wire function versus going by colors because while there are standard wiring codes they do not always get wired properly.
Also your Junction Box # 38656 may have labels on the terminals marking the function.
expert reply by:
Bud M
0
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Jenny N.
2/17/2026
Hey, how did things go with wiring the yellow wire from your 7-way connector to the junction box? Did verifying the wire functions help you match everything correctly? Your update could make it easier for others working on similar trailer wiring.