i dont know how the electrical is on your model lac but my 99seville is horrible. i used to run a jl 500/1 and it gave my electrical problems with no upgrades. on the hu it would start out with 14.2 volts and drop to 11 with just a 500w amp. now i have a rf t10001bd i have 2 yellow tops 1 in the trunk and 1 under the back seat to replace the factory batt. it runs fine. in my experiences the more electrical features in a car the less it can take abuse on the electrical system