hey guys Im at wits end with my rover newly rebuilt motor and everything on rebuild new. Now I had my alt. go out so I got a new 800cca optima plus a new alt twice first alt was no good. Got bat and alt put in ran fine for one trip to town got home and bat was only 9volts disconnected batt to charge and put a full charge put batt cables back on and nothing all connections are good.batt tested 13.2after charge and still nota no dome lights or anything could this be alarm related with ignition switches there anyway to reset the alarm. Thanks guys sorry for the new thread but just couldn't find answer
(it does have standard start guage lights that come on head and tail and break light

 

There is a major fuse box under the hood. Check all those.

 

Did you check connections on BOTH ends of the battery cables? ie: at Battery, and at other end? Don't just feel them, but put a wrench on them and tighten. If you suddenly get light, pull them off and clean, then re-install. Also, on the Positive cable, it has a couple connections. And the negative has a junction where there are multiple connections too. I'd check all ends of all cables.

Lastly, verify the connections on the back of the alternator are correct. Positive to Positive, etc...

 

Sounds like the key fob activated the immobolizer.

Now PROC Optima-made batteries aren't worth what they use to be IMHO.

 

thanks for all the replys.but I have still got issues 4 alternators from auto zone alltested bad so I got one denso from local shop new not rebuilt and still not charging.does anybody know wher the field wire on the alt goes to from the alt.is it just a ground or does it go into a positive part of the system.im not sure the alt is getting excited to charge.ideas appreciated.i love it but not far from burning it.haha