VY LS1 swap trans harness question

[Fu Manchu]

cheers Lex, will download that tonight - hopefully will have the info I need to get this conversion completed.

I’ll have a look through it in the morning and guide you to the info. There is. A. Lot.

 

[Fu Manchu]

Cross referencing the other two related threads on the topic.

https://forums.justcommodores.com.au/threads/questions-re-ls1-motor-transmission.104720/page-4

https://forums.justcommodores.com.au/threads/vy-body-plug-pcm-plug.304137/

 

[Smitty]

Hi all, looking for some advice about an engine/trans swap I am doing to an XJ6 Series 3 Jaguar.

The engine is a VY LS1. Trans is a 4L60E.

I have just purchased a complete VY ECU/wiring harness combo, to fit the LS1. The issue is simply this - the VY auto harness has the big rectangular grey plug which I believe plugs into the 6-speed auto computer? Can I use this ECU and wiring harness combo with the 4L60E trans? Is it just a matter of re-flashing the ECU or do I have to get a 4-speed auto harness instead of the 6-speed?

Any help or tips would be greatly appreciated.

cheers

hello Gos... thought I would see you here at some stage

 

[Gosling1]

hello Gos... thought I would see you here at some stage

Hi Yoda - yes I have been a member of this forum now for almost 20 years - back in the old VN Commo days. It is still cool to see my old thread about sorting out sticky temp and fuel guage issues is still a sticky after so long

Some good news on this conversion though - the new ECU/wiring loom I sourced last week, should be perfect for the job. Just finished id'ing every plug connector on the harness now, just looking to see if anyone can help with the pinouts for the large white plug which I believe goes back into the cabin and hooks up to the dash etc - for ignition switch and dash lights.....once I know my way around that colour-coding, it should not be too difficult to hook up the oem Jag wiring to the LS1 loom......fingers crossed eh