You should have 12VDC VOLTAGE present in those headphone type jacks.
Probably looks similar to this fixture from google search
These type of LIGHT/FAN fixtures that would plug into one of those 12VDC sockets are very popular with POPUP tent bed trailers... The LAMP/FAN fixure would snap onto the tent bed aluminum supports
These are available from ETRAILER-AMAZON- etc...
I never had any good luck with the LIGHT/FAN combo units however - Mine did not last long before the fan quit working... A O2COOL 10-inch AC/DC/D-CELL BATTERY fan is much better WALMART-LOWES-AMAZON
Roy Ken
My Posts are IMHO based on my experiences - Words in CAPS does not mean I am shouting
Roy - Carolyn
RETIRED DOAF/DON/DOD/CONTR RADIO TECH (42yrs)
K9PHT (Since 1957) 146.52M
2010 F150, 5.4,3:73 Gears,SCab
2008 Starcraft 14RT EU2000i GEN
2005 Flagstaff 8528RESS