I've got a voltage drop problem and am looking for ideas.
I'm using a 4-pin ECU and a 2-connector ballast.
With the key in the RUN position, I measure about 5 volts at the coil or the ballast resistor, with it in START I get about 8 volts.
When I unplug the ECU, according to my notes I get 12 volts in either START or RUN, which doesn't entirely make sense why it wouldn't be less in RUN but maybe I measured from the wrong terminal. Either way, there is a huge voltage drop with the ECU...
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I'm using a 4-pin ECU and a 2-connector ballast.
With the key in the RUN position, I measure about 5 volts at the coil or the ballast resistor, with it in START I get about 8 volts.
When I unplug the ECU, according to my notes I get 12 volts in either START or RUN, which doesn't entirely make sense why it wouldn't be less in RUN but maybe I measured from the wrong terminal. Either way, there is a huge voltage drop with the ECU...
Read more
