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Omega Help Area => Omega General Help => Topic started by: JamesV6CDX on 13 December 2013, 20:11:33

Title: LPG common wire
Post by: JamesV6CDX on 13 December 2013, 20:11:33
My stag loom has come without piggy back connectors!

It's no drama but I will have to join the wires manually

My understanding is each petrol injector has a (negative?) common wire which I need to cut and join each end to the LPG loom

How is this wire id'd on each petrol, I'm guessing it will be the same colour on each one?

:y
Title: Re: LPG common wire
Post by: 05omegav6 on 13 December 2013, 22:30:54
RTBL is the common wire :y

V6.
BRGE injector 1
BRGN injector 2
BRBL injector 3
BRRT injector 4
BRSW injector 5
BRVI injector 6

4 pot.
BRRT injector 1
BRBL injector 2
BRGN injector 3
BRGE injector 4

From Haynes btw...
Title: Re: LPG common wire
Post by: Kevin Wood on 13 December 2013, 23:11:54
RTBL is the common wire :y

V6.
BRGE injector 1
BRGN injector 2
BRBL injector 3
BRRT injector 4
BRSW injector 5
BRVI injector 6

4 pot.
BRRT injector 1
BRBL injector 2
BRGN injector 3
BRGE injector 4

From Haynes btw...

Yes, and it's not negative, it's positive, IIRC. Also no reason why you need to touch it. It's the non-common side of the injector that you need to cut. :y
Title: Re: LPG common wire
Post by: JamesV6CDX on 14 December 2013, 10:27:21
Hi both, genuine thanks for clarification, now makes perfect sense :y

And of course it's the unique one that needs interrupting, otherwise the gas ecu wouldn't have a bloody clue ;D

Cheers again :y

On a side note, I wonder if stag are starting to cut corners with no piggy backs, or if I just got the really basic cheap nasty one!

Lastly... I will look at a wiring diagram when not on nights, but for neatness, how about following the injector wiring back and doing it all in the ecu box? Just a thought if anyone has done it before...

Title: Re: LPG common wire
Post by: 05omegav6 on 14 December 2013, 12:39:20
The neatest/most user friendly way is to do it at the injection loom plug :y

Just need to obtain a loom from a breaker, and add the plugs from second loom to the lpg loom. This makes it plug and play, and alot easier if anything needs removing for servicing/repairs :y

Doing it at the ecu doubles the wiring at that point and makes maintenance alot more time consuming...
Title: Re: LPG common wire
Post by: JamesV6CDX on 14 December 2013, 14:37:03
The neatest/most user friendly way is to do it at the injection loom plug :y

Just need to obtain a loom from a breaker, and add the plugs from second loom to the lpg loom. This makes it plug and play, and alot easier if anything needs removing for servicing/repairs :y

Doing it at the ecu doubles the wiring at that point and makes maintenance alot more time consuming...

Cheers al. The only thing is, from memory, the 4 pot doesn't have a separate injection loom, just v6, else I agree that's surely the best way.

Bloody 4 pots ;D
Title: Re: LPG common wire
Post by: SIR Philbutt on 14 December 2013, 15:18:25
The neatest/most user friendly way is to do it at the injection loom plug :y

Just need to obtain a loom from a breaker, and add the plugs from second loom to the lpg loom. This makes it plug and play, and alot easier if anything needs removing for servicing/repairs :y

Doing it at the ecu doubles the wiring at that point and makes maintenance alot more time consuming...

Cheers al. The only thing is, from memory, the 4 pot doesn't have a separate injection loom, just v6, else I agree that's surely the best way.

Bloody 4 pots ;D

Dont knock it James, Think how little room you would have if there were any more  ;)