My 92 Xj has had an aftermarket remote start/keyless entry/ alarm with start disable since I purchased it in 2000 from the PO. All those wires and modules under the dash always made me paranoid. I have never had any issues though. It Has been on rough trail duty since I bought it.It is an old "Ungo Box' unit if any one remembers those. I would just be worried about creating an issue with the wiring integrity. A lot of people use them though.
2004 WJ LTD 4.7L W/ AFE Dry CAI, Hemifever tuned
Kolak/IRO 3" W/Bilsteins, Addco SB, Moog STB and Iso's
IRO TCC Skid, Crossmember and HD Adj. Trackbar
255/70R17 Cooper AT3's, JK Moabs
Fawkes Fab Modular Mounts, Shackle Tabs, BB Brackets