Sounds to me like something is going to ground on the last halo you installed... check your connections there and ensure that there is no wire exposed and touching anything it shouldn't be!
I think that he was saying wire it to the battery to ensure the halo itself isn't dead and going to ground.
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FRI'd Sidewinder, Novi 1200 S/C @ 5.5psi, Custom TR1235 A2A Intercooler, Ported SRT Headers & Gutted Mid's, EGR, MDS & 02 Delete, Custom Catback w/Blastin Bobs SRT Pipes 4" tips, 170 Tstat, Big Bully Catchcan, 3.06 diff, 2800 stall, MTCM, Tranzformer, SRT Rad, SRT P/S Cooler, 5/15% Tint, SRT 20's, SRT Spoiler & Bumpers, Custom Stainless Grill, SE Coilovers.
AMP'd, FRI'd and Blown... 422rwhp/463rwtq @ 5.5psi conservative street tune!