Thought I'd got this sorted. Having re-read thru my list of IVA fails, noted that fog light has to be operable only when lights are on. So would it be OK to feed fog light from lights relay?

be aware that the fog light requirements have changed in the latest version of the test., see current thread
" IVA compliant fog light switch"

Thanks for the flag up.

BTW - Forgot to mention that Im using PWS loom. With this, there is specific cable for fog light. Not sure how to modifiy this for F/L to comply with IVA requirement.

[Edited on 12/7/13 by Dick Axtell]

Sorted - After re-reading the PWS instruction sheet, and spec sheet from Savage switch, finally twigged the slate wire was power supply, but downstream from light switch. Oh - and re Savage spec sheet; "Source" means electric "load", i.e. fog lifgt!!

[Edited on 13/7/13 by Dick Axtell]