Only when the aux light switch is switched to on, then I select reverse, the dash lights come on and the intercooler fan will come on. Aux light switch is off, all is good.
The aux light has its own power supply and on a separate relay mounted in the passenger side foot well.
The Intercooler fan's relay is mounted in the OEM relay box in the engine bay.
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Along time ago I rewired this entire relay box to house other relays that were strewn all throughout the engine bay. To be honest I'm not sure how long this issue has been here, as one would rarely hit reverse and flick that switch while the car is off. If you get what I mean.
Im thinking its something in that relay box that I've wired incorrectly. But I don't really know. Just guessing. I'll check what I'm capable of doing...
I might even just hand the car over to a local auto elec, this might be beyond me.
Thanks.






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