I used a device I picked up from PeP Boys Auto Parts. You remove a fuse and plug it into the spot created by the removed fuse. It has two places for fuses on it, one is for the orignal fuse you removed and the other is for a fuse that will be used for the device you are adding. It includes a pigtail to connect to your device as well. It makes connectiosn very simple and neat. It also provides additional fuse protection for any add on. And no splicing into your existing wiring harness needed. 
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03 H2 Pewter W/Lux, with 05 Navigation Radio and XM added. (Sold)
07 H3 Slate Blue W/Lux, Off-Road, NAV, Sunroof, XM, Tow, Auto (Sold)
08 H2 White W/Lux, NAV, Air Sup.
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