Fuel pump just quit Options

[surfdogskier]

So I had everything working well on my carb conversion with the exception of the fuel pump which constantly ran unless I pulled the ground wire per SirAndys carb conversion write up.

Now my pump will not work at all. I direct wired it to the battery to see if the pump was good and it worked. I connected a 12 volt wire to my relay board at the black/red wire #13 connection and it worked. So no issue with the wire. However something on the relay board or relay prevents it from working when the key is turned on.

I was going to wire it to the 2 other points on the relay board to get 12 volts (T4b and the #12 pin on the T12 connector). However, with the key turned on, I am not getting 12 volts to either of these. the T4b, I am getting 2 volts and the pin 12 on the T12 I am getting 4 volts.

My only other option to get 12 volt power is to connect to my coil but I have read this is not a good idea.

Looking for some guidance.

[lierofox]

The biggest point of caution I'd give for that solution:

Your fuel pump is now no longer fed by a relay, and the wires coming from the key switch to feed the relay board might cause problems as a result, both from the long path and the fact that they're powering the pump directly instead of switching a small relay coil, depending on the fuel pump you're using that could be between 5-15 amps.

The wire for your fuel pump is also no longer fuse protected, where previously it was protected by the 25a fuse, now there's just a wire going directly from the battery, forward to the ignition switch, over to the un-fused side of the fuse panel, back to the rear again, and finally back to the fuel pump.