Dead battery after radio cig liter install

[dads longhorn]

I just had installed a new radio speaker, refurbished radio, and new cig liter from lmc and now the battery is dead. Battery drains overnight. The cig lighter has a little light bulb in it too that comes on when the lighter is taken out of the socket. After a quick jump the battery is fine. Any ideas what's up? I guess I'll take it back to the mechanic who installed everything to make him figure it out. Meantime I'll read the owners manual and service manual to see if any warnings on battery drain from cig liter. Any help is appreciated in advance. Thank you
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