Police issue XJ?
you are correct binary, my brother works as a deputy sheriff and I just asked him. that is exactly what it is for.
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Joined: Nov 2008
Posts: 971
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From: south bend indiana
Year: 1993
Model: Cherokee(XJ)
Engine: 4.0 i six H.O.
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Joined: Oct 2008
Posts: 197
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From: Stillwater, NJ
Year: 1994
Model: Cherokee
Engine: 4.0 L AMC 242 High Output
The EXT IDLE system is becoming obselete, as the electronics are becoming much less demanding on a battery. Lights used to be halogen bulbs attached to rotating motors, and all the strobes were a nice draw. Now, everythings LED which is about 10% of the the draw of a halogen system. As far as other electronics, it's just a radar unit and a computer, depending on if the department uses them.
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Joined: Jan 2009
Posts: 45
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From: Little Rock, AR
Year: 1996
Model: Cherokee
Engine: 4.0L HO
I always assumed the more draw from the alternator = the more tension it gives off, forcing the engine to make up the difference and rev up automatically... 
Unless that is only in newer cars because I jumped my brothers car with a 2007 Honda Civic and as soon as he started cranking his car, my Honda revved up.

Unless that is only in newer cars because I jumped my brothers car with a 2007 Honda Civic and as soon as he started cranking his car, my Honda revved up.
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Joined: Apr 2008
Posts: 2,237
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From: Northern Illinois
Year: 90
Model: Cherokee
Engine: 4.0
I helped do a 3 inch lift on a local volunteer FD's Cherokee. They wanted something that wasn't a land yacht for the incident commanders at field fires.
Pretty cool to see it afterwards parked in their station...
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that would be funny
