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.

[rhodyguy]

Are you sure the relay is good? Plug it in to a relay plug for a headlight. If the light doesn't raise, no good. Cleaned the fuse and holders? Corrosion in the relay pin holes? Check the V at the pump end of the supply harness to the chassis. As the pump runs with the direct from bat wire you know andy's trick is doing the job. Points to a power supply issue. The FP harness is suspect. Have you ever removed and cleaned the relay board? Really simple task.