i just got a 92 v8 dakota, and ran the codes, this is what came up,any help would be great...12 41 21 46 whats the fix...at night the lights and dash lights go from normal to bright, at different times...

 

12 Direct battery input to PCM was disconnected within the last 50 key-on cycles(normal)
41 Generator field not switching properly
21 02s sensor problem (oxygen sensor), upstream or down stream
46 Charging system voltage too low
https://dodgeforum.com/forum/general-tech/8717-service-engine-codes-for-obd-engines.html
sounds like your alternator has failed or wires disconnected. This is most likly your light problem too. take your alt. off most autoparts stores can test it for free.

 

the alt and batt are new.... today i messed with the plug on the comp,and tonight with the lights, the gauge stayed in the middle, when using the turn signals it jump back and fourth alittle to the discharge side, then back to the middle.

 

where is the best place to get a stock comp...

 

Have you checked your local junkyard?