I need to know either the Reg number or the Vin number.
Send by private message and I will get back to you.
Ok, things are seldom easy when dealing with cars, especially French cars!
According to the parts catalogue your Glacier White Van was built in September 2003.
The part number for the engine loom is listed as 7701065449......£257.40.
There is an additional pressure switch required 8200207135...... £15.28
When I checked with Renault they cannot be certain as to what the current part number is.
To ascertain this you need to have a good look at the Engine loom for a "tag", on that tag is the original part number.
If you find that number, lets hope the tag is still in place, Give Renault a call and they should be able to price the loom there and then.
Hope you get this sorted.