I have a set of "new in box" Fender Vintage Noiseless pickups on their way to me via eBay. The seller has a 5 day return policy from the scheduled delivery date. Unfortunately, the guitar the pickups will be going in will not be ready for assembly for a couple of weeks, so I cant install them within the return window. I read on here somewhere that i should be able to check the pickups resistance with a multi-meter, and if they test out to spec, they should be good. Is that the case? Is there anything else I can do to verify they are in good shape?