Hit a mental block wiring in fuel pump

[oopziboozted]

terminal 30-battery 12v
terminal 87-pump (ground side of pump to chassis)
terminal 86-ecm 108 signal
terminal 85-chassis ground

was told this way.....the pump didnt prime when IGN ON tho....

[88sinZ]

I'll jump a relay tomorrow to see if this will work for prime and crank

really not a fan of a manual switch, as it's currently wired

[oopziboozted]

thats how i had mine wired at first. didnt prime on IGN. so i have 2 battery voltage leads going to terminal 30 & 85. this way works for sure. confirmed in my girls 87t and will be doing it the same way in the shiro.

[mtherkamp]

ECM 108 is a GROUND signal, so you have to supply power to pin 85 in order to activate the relay. You can connect the original power wire that used to go to the pump to pin 85. The way I wired it, I took the two wires (Black and Blue/White) coming from the 3-pin connector that originally fed the fuel pump and connected them to 85 and 86 on my relay. Then connect your dedicated 12V battery source to Pin 30 and pump positive to Pin 87. Lastly, ground the pump to chassis.

[88sinZ]

Haven't got around to it, left for vacation.

Will definitely try and report back