210hp 6BT Relay control whilst engine running

[Ian]

Hello I have a 210hp 6BT with a CAV injector pump

I am wanting to control a 12v 100a NO relay that has a pull in current of around 200mA, I need this relay to be energized while the engine is running (to control a B2B charger connected between my start battery and the lifepo4 house battery) please note I can not use a VSR.

What would be the best idea for wiring a control wire for the rely? I was thinking off the fuel pump solenoid? or is that circuit best left alone?

Cheers Ian

Topic

[Tony Athens]

If all of your current engine wiring is 100% up tp spec, and your relay only draws 200mA, you can use the ignition circuit (Purple key output wire) at the helm station to control it. Put the relay and the added circuit on a 1-2 Amp fuse fast blow fuse….

1 user thanked author for this post.

Ian

[Rob Schepis]

Like the in-line pumps, your pump has a “run” circuit. Use the IGN or “key-on” off the key switch.

1 user thanked author for this post.

Ian

[Author]

Replies