birddog486
Well Known Member
I'm considering changing out my master contactor/relay as it seems the voltage getting to the buss from the battery when the engine is off has slowly declined over time. I'm consistently getting low voltage on the GPS now when the engines off.
I'm thinking the resistance across the contactor is increasing but I'd like to hear from others who have the Odyssey battery and the standard vans contactor.
My setup charges at a consistent 14.4 volts but when the engine is off I'm seeing around 12 volts once stabilized on the EFIS. Testing the battery shows 12.7-12.8 volts and this is now the second battery on this plane in the last 5 years.
Do others see this large of a voltage drop across the contactor? I should add when starting it has no problem swinging the engine over.
I'm thinking the resistance across the contactor is increasing but I'd like to hear from others who have the Odyssey battery and the standard vans contactor.
My setup charges at a consistent 14.4 volts but when the engine is off I'm seeing around 12 volts once stabilized on the EFIS. Testing the battery shows 12.7-12.8 volts and this is now the second battery on this plane in the last 5 years.
Do others see this large of a voltage drop across the contactor? I should add when starting it has no problem swinging the engine over.