Aaron,
i bought it at $400 from a fren n installed it at Cosplus in SS15 ..so all together $480... yes..it's hard to install and the ppl thr still nit to refer back to the manual on how to install ....bear in mind,if ur existing alarm doesnt haf any auxiliary input, u will not get the Viper On/Off indication and it will be quite redundant...like my stupid alarm ...only when i 'illegally' open the door, it will be Viper On/OFf indication but only once.. =) ..
BTW,ANY one can help me wif BLACK MAMBA??..good or lousy piece of crap...??