I have a 2005 jayco feather light with 12 volt issues I exsperiance a power spike fried the convertorreplaced it now I have shore power 12 volt power but my AC furnace and fridge are not working

Get a copy of the manual

https://www.google.com/search?q=2013+jayco+white+hawk+ultra+lite+manual+pdf

..

Contact your local service center directly or online here:

Contact Us Family RV Jayco Inc

Hi,

I am guessing this is the link to the manual you are looking for :
http://www.jayco.com/files/downloads/prod_owners_manual_filename_167.pdf

120-
VOLT
AC
SYSTEM
The following electrical components (if so equipped) will only operate when your
RV is connected to shore power: 120 to
12-volt power converter, air conditioner,
120-volt refrigerator, microwave oven, television(s), fireplace and appliances
plugged into convenience receptacles.

SECTION 6 - ELECTRICAL SYSTEM JAYCO TOWABLE
6-2
120-
VOLT
CIRCUIT
BREAKERS
The 120-volt AC circuit breakers located in
side the main load center protect all
120-volt wiring and components in the RV fr
om circuit overloads and short circuits.
Should a circuit overload or short circui
t occur the circuit breaker protecting the
affected circuit will "trip" preventing the flow of electricity through that circuit.
If a circuit breaker trips, shut "off"
the appliance on that circuit (i.e., power
converter etc.) and allow the circuit breaker to cool down for a brief period of time.
After the cooling down period, reset the circuit breaker by moving its lever "off" and
then back to the "on" position. If the circuit breaker re-trips or frequently trips,
contact your dealer to have the electrical problem diagnosed and repaired.
A circuit breaker identification label is permanently attached to the inside surface
of the 120-volt load center.
Maintenance and Replacement
At the beginning of camping season, inspect the circuit breakers and replace as
needed. Test by turning each circuit breaker "off" and back "on". Circuit breakers
are wearable parts and must be replaced
as needed, as part of your RV
maintenance. If you have any questions, consult your dealer.
Please contact your dealer for repair assistance when replacing circuit breakers.
CONVERTER
The power converter converts 120-volt AC power to useable 12-volt DC power
when the shore power cord is connected to an external power source.
The converter has a built-in protective thermal breaker that will shut it down should
overheating occur. Overheating can be
caused by operating the converter above
its maximum power output for an extended period of time, or by an obstruction to
its ventilation air flow. To reduce converter heat build keep unnecessary 12-volt
lights and motors turned "off"
.
Keep the converter cooling fins and fan clear of
obstructions.
Inspection and maintenance
If the 12-volt power converter is not working (auxiliary battery not being charged)
check the reverse polarity fuse(s) in the converter fuse panel.
There are no
customer serviceable parts inside the converter case and the
manufacturer's warranty will be void if
the case has been removed
. If you
have further concerns contact your dealer.

Contact your local service center directly or online here:

Contact your local service center directly or online here

if you can plug in your trailer using shore power. the converter will send 12 volt power too one of the cables thinking it is trying to charge the battery bank. use a volt meter to checkk which is pos

You might unhook the battery and with the camper plugged in to shore power the 12v lights should work. If not check the breaker that goes to the inverter. If that is not tripped then check the power output at the converter. I would expect the inverter is shot. I replaced the one on my Jaco two years ago with (Progressive Dynamics 60 Amp Power Converter with Charge Wizard and the remote pendant)

post a question, above is a statement. please.