Circuit Breakers

[Ron Spiker]

Can someone with one of the mid-to-late-60's model B-2B with the row of 7 circuit breakers tell me what each of the breakers are for? Mine was upgraded from a B-2A with the row of 4 breakers, and the others are not marked. Here's what I do know, starting from left to right.

1. Starter
2. ?
3. ?
4. Fuel Gauge
5. ?
6. Instruments
7. Landing Lights

The factory said they've changed things several times, so they couldn't tell me what they should be.

[bryancobb]

Hi Flylow:

I completely rewired my 1963 B-2b and here's what I found installed, probably in the original factory configuratiion:

2 horizontal rows of items, Bottom row had (8) items, Top row had (4) items, there was (3) items under the seats or inside instrument pedistal
as follows:

TOP ROW (L to R) 1) 5A Circuit Breaker - For Collective Starter Button
2) 5A Circuit Breaker - For Fuel Tank Gauge
And The Defrost Fan
3) 5A Circuit Breaker - For Low Fuel Light/ Hobbs
Meter/Xmissn Overtemp
Light/Engine Oil Temp
Gauge
4) 30A Circuit Breaker - For Landing Lights

BOT ROW (L to R) 1) Magneto Switch
2) Toggle Switch - Master Sw for Battery to Bus
3) Generator Field Circuit - To Cut Generator On/Off
4) Toggle Switch w/integrated 10A Circuit Breaker-
for Aux Fuel Pump
5) 50A Circuit Breaker - For Generator to Main Bus
ant to Battery for Charging
6) 10A Circuit Breaker - For the Radios
7) Toggle Switch w/integrated 5A Circuit Breaker-
for Compass Light, Cockpit Utility Light, Panel
Lights Through Dimmer.

UNDER SEAT 1) 5A Fuse Holder - For Starter Vibrator Box
2) 15A Fuse Holder - For Fore/Aft Cyclic Trim
INSIDE PEDISTAL 3) 5A Fuse Holder - For (+) from Shunt to Ammeter
5A Fuse Holder - For (-) from Shunt to Ammeter

May be this will be of some help.

Bryan

[Ron Spiker]

Thanks Bryan. My bottom row is the same, and I think the ones under the seat also, but the top row has 7 circuit breakers on it. So far have not determined what the other 3 breakers are going to.

Thanks,
Ron