Multiple devices on singular Auxillary ports

Discussion and support for MoTeC's previous generation of entry level ECUs

Multiple devices on singular Auxillary ports

Postby BJ 991 on Thu May 17, 2018 6:44 pm

Hi all,

Just a quick question as I iron out some final details on my latest loom.

Excuse the noob-ness as always, but only one way to learn!

Let's say I have 3 fuel pumps: A 1200hp main pump (made up of x2 pumps), and a single 600hp lift pump.

Am I able to wire them all individually as far as the power side of things goes (separate relays where necessary of course), however, ground them all to a single Auxillary output and control them as one, to prime and run together?

Cheers
BJ 991
 
Posts: 20
Joined: Sat Jan 27, 2018 7:17 pm

Re: Multiple devices on singular Auxillary ports

Postby stevieturbo on Thu May 17, 2018 8:40 pm

1 ecu output can easily trigger many relays as one.

I do prefer a single large relay though, and likewise a single fuse at least for the main pumps. That way if it blows or fails...the engine stops.

If you have safety features in place to ensure a lean condition cannot occur if one pump were to stop for whatever reason, then 1 relay/fuse per pump would also be a safe option.
stevieturbo
 
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Re: Multiple devices on singular Auxillary ports

Postby BJ 991 on Fri May 18, 2018 12:07 pm

Thanks Steve,

Good to know. We've got safety measures in place, as I had originally thought about a single relay for that exact reason, but decided against it. So x2 40 amps and a 30 amp it is!

Cheers much.
BJ 991
 
Posts: 20
Joined: Sat Jan 27, 2018 7:17 pm


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