SIP GP speedo fuel tap warning

[poppygun]

Hi all
The fuel tap that is connected to my SIP speedo keeps flashing the low fuel warning even when I have a fullish tank of
fuel have already checked wiring in headset and at fuel tap end.
Also changed the tap for another one.
Anybody else had this and is there a fix. It worked well for a wile any ideas ?
Thanks poppygun

[Velo Merde]

Yea, they are all crap. i opened them once to renew the reed-switch inside the metal pipe. if it works i do hate them because the magnet is to much floating up and down and its not clear whan a certain level is reached. take a wire end bend it to a hook. try to catch the swimmer and lift it up, so you can see if its stucked on the bottom. if this works, scew the tap out an clean the pipe and the magnet around. Parts of metal can block it. if it does nothelp, the reed switch does not open anymore. i removed the tap because its nothing more than a useless gimmick.