1997 chev suburban electrical

[x1957x]

My suburban(97) has a few issues. Every time I get in it the time changes and lately it seems to turn over slow and not like it is getting gas. It does eventually start tho. It also sometimes has a dimmer switch(blinker) where it wont change the low to High beams. Any answers?? Maybe ignition switch? Need some idea where to start to look. Thanks

[delcecchi]

How old/good is the battery?   First things first.  

 

Second, how good is the output of the alternator? 

 

What is the voltage when all this is happening? 

 

Easy place to measure is at the lighter socket. 

 

 

Edited May 15, 2017 by delcecchi

[Mike89]

the easiest way to check those is at the parts store where they check it for free

[delcecchi]

That will work also, although there is something to be said for testing it yourself.

[x1957x]

got time to check it out (finally). All it was was the positive side of the battery has 2 cables that run to it. I found the computer one was closest to battery and the starter one was on the outside. This had to be turned to starter cable first and the computer cable second ????.  Alls well after that. I also had to get a longer bolt in it to make a better connection..