Vn/vp Wirring diagrams

Wiring diagrams and questions
Humptydumpty
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Re: Vn/vp Wirring diagrams

Post by Humptydumpty »

Can u give me a call mate?
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Re: Vn/vp Wirring diagrams

Post by Humptydumpty »

Appreciate all the details but something must be wrong here..

There is power to the injectors (although wen I put a test light on one both pins lit the light up)

What I don’t understand (might be cause I’m not getting this back from ecu)

A relay needs x2 positives - one is direct from battery or through ignition at least - then there is a positive switching wire to switch the relay?

Then a earth then a power to item needing power.

I’m not getting power to switch the relay...

Thinking I might just wire the pump through a relay direct to ignition... is there a benifit of having it controlled through ecu?

Thanks heaps for your time and help mate!!!
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Holden202T
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Re: Vn/vp Wirring diagrams

Post by Holden202T »

its a safety thing, if there is no rpm the pump will stop, ie. if you have a crash.
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Re: Vn/vp Wirring diagrams

Post by Humptydumpty »

Yeah ok I was thinking that might be the case
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Re: Vn/vp Wirring diagrams

Post by gtrboyy »

Wire f/pump up to a switch if you don't think it's working.

Should hear it prime 2-3 secs then turn off.

Decade back when did my torrie could only get to do 2-3 prime but pump wouldn't stay...shrugged & fitted tachiometric relay
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Re: Vn/vp Wirring diagrams

Post by pman92 »

The ECU doesn't switch the relay power, it switches the earth.

You can switch a relay by providing power or earth or both. As long as you complete the circuit through the coil you have switched the relay.

You should have ignition power on 30 and 86, 85 should go to to ECU, and 87 goes to fuel pump
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Holden202T
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Re: Vn/vp Wirring diagrams

Post by Holden202T »

Stand Alone 808 Relay Wiring Diagram.png
Stand Alone 808 Relay Wiring Diagram.png (48.76 KiB) Viewed 4540 times
Humptydumpty
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Re: Vn/vp Wirring diagrams

Post by Humptydumpty »

Legendary
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Re: Vn/vp Wirring diagrams

Post by pman92 »

Looks like I was wrong about the fuel pump relay.

Guess it's to prevent a short circuit to earth keeping the pump running
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delcowizzid
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Re: Vn/vp Wirring diagrams

Post by delcowizzid »

Fuel pump is the only positive triggered output
If Its Got Gas Or Ass Count Me In.if it cant be fixed with a hammer you have an electrical problem
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