in car surveilance and current draw

Yup, i will, my response was exactly the same as you guys, but management refutes my logic, because they have no technical background.

LOL! You ain't management eh? I think it only fitting that the first demo/test install should be to the CEO's vehicle, or whoever antagonises you most. (Sorry mate, I'm over here - ha ha!) Warn them that if 800mA then it is the equivalent of a 10W bulb (ie, a dome light if not 5W, or 1-2 park lights). And you might find the 800mA is a peak or an overestimate. (Sales & techies ain't what they used to be.) Surveillance will draw more than 3-15mA trackers, but anything above a couple of hundred mA full-time seems ridiculous. As was said, a typical 160mA relay can have disastrous results after a day. So suck it and see. Just make sure you choose the right sucker. I'm looking forward to the conclusion of this exercise - except of course that it will all be YOUR fault.   (Where's that "stranded" engineer and management/marketeer joke...?)

Send them an e-mail stating that you do not think it is a good idea. Then do as many of them as they want. Then when they start having problems, you have your e-mail to back you up.

Great suggestion. I used to read-receipt such emails (that's where MS Outlook and similar internal server based system were good) and chase up those that hadn't read them (then denote that instance & outcome in my work diary).

I will follow your advice IAAI..........i will update the thread if anything more comes up.