no 12 volt power from batteries.

[daytrader]

1985 Holiday Rambler Imperial 33 ft.
electrical issue
please help

on shore power - lights work - therefore converter must work
on shore power, vehicle warming up - lights pulse
no shore power, vehicle not running, no power to 12v system

checked
batteries - full 12.6v Trojan T2 x 2
solar charging panel reading full charge on batteries
continuity from battery to fuse to inverter
continuity through fuse to inverter,
12.6V reading from output of inverter on pin one and four
no power to any sockets,
no power to any plug ins.
no power when drawing power from tool on plug in
distribution panel from converter
all fuses continuity through all

I'm stumped, unless there is a fuse somewhere hidden I don't know about.

any suggestions from all you knowledgeable people out there.

thanks in advance

[MNtundraRet]

Your description of what's working is correct for a failed solenoid, or solid-state isolator. The batteries are not connected to the 12v circuit.

When plugged into shore-power the converter/charger can power the 12v circuit with batteries out of the loop. The engine alternator can still charge the batteries.

A MH of your circa can have some power fluctuations because it needs the batteries in the loop to smooth things out.

I would cycle the battery-disconnect switch on and off a number of times (they sometimes stick). It can also help if you start the engine first and let idle while you try the "disconnect" switch. Increased voltage of 14.5 to 15.0 volts versus 12.7 volts or less can help free a stuck solenoid.

[1492]

Moved from Forum Technical Support

[daytrader]

by battery cut off switch - if your referring to the switch that goes between shore and battery, that is below the remote starter for the inverter, its working and in battery mode. but don't think it would interfere with 12v system as it just toggles between battery and shore for the plug ins. There is a finned box in the battery compartment, cleaned the terminals and ends in baking soda to remove any hidden corrosion. no switch on it that I can see but it does have a positive and negative post. no idea what that is but think it is the battery isolator. there are no cut off switches for the house batteries.

[Second_Chance]

I recently had a similar problem... it took someone else to figure out that I had moved the battery cut-out switch loading plastic bins in the basement of our fiver. OK - I've confessed.

[enblethen]

There should be a fuse or circuit breaker adjacent to the batteries or near the battery disconnect.
Have you tried cycling the battery disconnect? Could be bad.