Newbish Wiring Question: OPUS as a "non-intelligent" PSU

**DJiK** · 09-14-2006, 08:47 PM

I know how to wire the PSU the right way -- I've read this thread.

My question is whether I could use the OPUS PSU when it's powered in a "non-intelligent" way.

Here's how:
OPUS (+) --> Positive Battery Wire (fused)
OPUS IGN --> "Bridged" from the Positive Terminal/Wire
OPUS (-) --> Negative (Chassis) Wire

The Power Switch wire is already running from the motherboard to a momentary switch in the dash.

My main concern is if I could have the PSU in an "always on/ready" mode by shorting the positive and the ignition ends and controlling it via the computer's power switch?

I do realize that by doing this I'd have to manually turn the computer on and off and face the risk of forgetting to turn the PC off and ending up with a dead battery.

**ZtH01** · 09-14-2006, 09:10 PM

Originally Posted by DJiK

I know how to wire the PSU the right way -- I've read this thread.

My question is whether I could use the OPUS PSU when it's powered in a "non-intelligent" way.

Here's how:
OPUS (+) --> Positive Battery Wire (fused)
OPUS IGN --> "Bridged" from the Positive Terminal/Wire
OPUS (-) --> Negative (Chassis) Wire

The Power Switch wire is already running from the motherboard to a momentary switch in the dash.

My main concern is if I could have the PSU in an "always on/ready" mode by shorting the positive and the ignition ends and controlling it via the computer's power switch?

I do realize that by doing this I'd have to manually turn the computer on and off and face the risk of forgetting to turn the PC off and ending up with a dead battery.

Short answer... Yes.
But Why?!?

**DJiK** · 09-14-2006, 09:23 PM

Originally Posted by ZtH01

Short answer... Yes.
But Why?!?

I have everything wired for another PSU, and it's temporarily out of the car.
Although I have ignition wires in the trunk already, they're wired in a complicated manner to prevent speaker pop.

The OPUS will be used temporarily over this weekend, and if I decide to keep it, I'll just wire everything the way it was meant to be wired.

So you're sure that having a constant 12V from the battery at the IGN end is OK for the PSU?

**ZtH01** · 09-14-2006, 11:54 PM

Originally Posted by DJiK

I have everything wired for another PSU, and it's temporarily out of the car.
Although I have ignition wires in the trunk already, they're wired in a complicated manner to prevent speaker pop.

The OPUS will be used temporarily over this weekend, and if I decide to keep it, I'll just wire everything the way it was meant to be wired.

So you're sure that having a constant 12V from the battery at the IGN end is OK for the PSU?

Sure. It's no different then having your ignition on all the time. But keep in mind it IS no different then having your ignition on all the time. The OPUS will be on all the time, which will probably keep your 5v rail powered all the time.