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I have installed a VT EcoTec and auto in a Triumph TR7.
I bought the complete Engine, Loom and ECU, but none of the other wiring came with it.
I'm trying to find out what relays etc. are required to run the engine, and how they are switched.
I'm fitting the Commodore Dash unit, and a Barina SC EPAS.

I've built the mounts etc. and fitted the engine, and am currently re-wiring the car, so thought it best
to find out what I have to do for the engine wiring.

Is this the best place to ask questions, or can someone suggest a better site?

Easy enough job have look through these viewtopic.php?f=32&t=2265

Also need have security removed from the memcal too.

Thanks for that.

I'm not very good at reading wiring diagrams, but I'll stare at for a few days then maybe come
back with some more meaningful questions.
I'm aware of the VATS issue and have a programmer etc. to modify it and the speedo input.

Post some pics. Should be a real weapon when it's finished.

There are some pictures here:-

http://s991.photobucket.com/user/stag76 ... t=2&page=1

Very nice fabrication and restoration. Is that the old P76 engine in the early pic?

It is a 3.5 Rover SD1...about 135hp.
The suspension was also Rover, which I sold together with the engine & box to a friend
who has fitted it to his TR7.

Have I got this right?
The EFI Relay is switched by the ignition switch, and grounded by Plug YE114,which looks to be a permanent earth connection.
I haven't been able to work out where this EFI relay feeds the power into the engine loom.
The Fuel Pump Relay is switched by the ECU via Plug YE110, with the switch grounded via pin YE114.

Is there a pin-out for plugs YE110, YE111 and YE112.

The wiring on the engine I have was cut when it was removed.
There are 2X approx. 6mm cables that I guess are connected to the battery positive, and 2 approx. 3mm cables attached
to a plug that connects into the loom via fuses, but I haven't worked out what they are for.

the two bottom pics, that's the fan fuses

the cut ones being black I can only assume are ground wires, where do they go to ?

Thanks for that.

As you said, the black wires are grounds...I traced them to fittings that look like they attach to the chassis or something similar.
I don't know where the cut end connected to, or why it was cut.

I don't know how the fans are wired, as the two red cables disappear into the engine loom, and there are no relays to switch.
Maybe they are also connected to one of the engine connectors (YE110,YE111 and YE112) and then to the relay.
A pin-out for these plugs would be a big help.