I know how to do it as I've done it before but my mine is a blank as to which wire goes to which pin on the relay....




Pins...

30/87a
85
86
87


Any help will be appreciated.


CheeRS
Steve

 

blue/white from ecu(pin28 i think from memory) - pin 85
ignition feed - pin 86
Fused supply straight from battery - pin 30
fuel pump + terminal- pin 87

the old ford black/red will also need to be connected to pin 87 as this also powers the iscv etc. make sure you isolate it boot end to prevent short circuit.

i used a Durite 40/70 amp relay part No. 0-728-70

hope this helps,
Phil

 

Thats for cossie by the way!

 

87 is the output and 30 will be the permanent live, i.e. what will be switched to power the pump, 85 and 86 are the relays inputs.

Typically the original relay is used as the trigger for the new relay, i.e. from 87 on the old relay to pin 85, 86 is a ground. Pin 30 should have your new FUSED live spur direct from the battery and pin 87 should be the output to the pump itself.

Remember to ensure the pumps ground connection has a good earth as well, this does not mean onto a rusty wheel well

Make sure to disconnect the batterys earth BEFORE you start any work!

Martin

 

Cheers.... Its for a Focus RS, I've done them for a Cossie in the past but had memory loss lol


Steve