I’m currently installing a Facet electric fuel pump and need to wire it up to a relay. I've never fitted a relay before and would appreciate someone telling me how to wire it up for this installation. Many thanks!
There is no need for a relay!! however the coil is 86 and 85, normally open contacts 87 and 30.
Curiosity why do you think you need a relay?
Thanks, John. Much appreciated.
Whilst researching the installation of this pump, and electric fuel pumps in general, I noticed some websites installation instructions included adding a relay. However, I'm happy to know that it's not necessary here.
Post by johnwp5bcoupe on May 20, 2019 18:41:11 GMT
No problem Andrew it will save you some grief not using a relay! to be correct wire it from the ignition terminal if not on the fused side fit an in line fuse, there is a spare terminal! you should use a fuel cut off valve in case of an accident
Just to add a little. The older type of pump did require a relay as the load is quite high. The fuel cutout John refers to is an Inertia Switch, which is connected into the wire supplying the pump - one wire from the inline fuse and another to the pump; they are readily available at modest cost on ebay (I use Land Rover ones); mount vertically in the engine bay in an accessible spot.
Post by richardlamsdale on May 22, 2019 9:24:47 GMT
I also fitted an inertia cut-off switch (from a Range Rover) for the electric fuel pump when I re-wired my car. I mounted it vertically on the bulkhead next to the fuse box. You can also wire the inertia switch to cut the supply to the ignition coil so the engine stops immediately the inertia switch is actuated, but then you really do need a relay.
The Website of the Rover P5 and Rover P5B: www.roverp5.com