rk911 wrote:
jeep liberty, jeep wrangler or jeep grand cherokee.
Well then, the Wrangler of course and hopefully the JK series 2009 and above. Just make sure it's new enough to not have a steering lock and just one thing less to contend with.
Use a COOLTECH wiring harness and you'll have this benefit from them, which I've quoted elsewhere...
"ALL previous model Jeeps prior to the introduction of the JK Wrangler from 2007-current would require diodes. The JK utilizes a CAN-BUS electrical system. When you "flip a switch" in the JK, more often than not, you are not completing a circuit (through a relay). In fact, when you flip a switch, you are sending a request signal into the car's CAN BUS system. The Power Distribution Module is invoked with the task of making the connection. This combination of CAN-BUS and the power distribution box eliminate traditional feedback - as long as the system is wired properly. We have several hundred tow harnesses on the road and I would venture to say we have the most popular Wrangler harness on the market. We wouldn't have this success if the system didn't work. Note that we also sell a solution for older model jeeps - 1996-2006 Wrangler TJ's. Rather than use diodes and "hack up" your OEM wiring, our solution uses separate bulb and sockets. This too is a popular solution - because it works."