battery drain

[impala]

hi guys i have a 1999 chev tahoe 5.7 engine and i have a battery drain
when i hook the my test light from the negative battery terminal to the the negative post the test light is on and when i pull the 20 amp horn the fuse
the light dims a little so im assuming thats where the drain located but not completely sure any help on this would be great wiring diagrams anything
thanks guys

 

[lesterl]

Keep pulling fuses untill it goes pretty much out..... Door switches can be a PITA also.....

 

[impala]

i have pulled all fuses out under hood and under dash by drivers door and still never went out but test light just dimmed when 20 amp horn fuse pulled out what should the draw be on that tahoe spec

 

[lesterl]

When you have your testlight in, pull the horn relay......... did you pull all of the fuses, or just 1 at a time? any others that caused the light to dim with the horn fuse out? Did you unhook the underhood light? Disable the dome light when testing? that could keep your test light lit.....

 

[impala]

the 20 amp horn fuse also powers the underhood light as well but when all other fuses pulled light never went out ill try the dome light and maybe the door switches too thank you for the help the draw is about 2 10ths of an amp when the horn fuse was in it was just over 2 amp draw i did pull the horn relay nothing happened either

 

[lesterl]

200ma doesnt sound like a bad current draw from the battery. 2 am will run it down fast....... 200ma may just be the ECM and radio and Reciever for the keyless current draw added together.....

 

[Tex99Tahoe]

Bad vanity visors

I found broken hinges on the lighted vanity mirrors mounted in the sunvisors, leaving their lights on. Only noticeable in really dark conditions. Small current drain, but enough to cause previous owners to go through too many batteries. Vendor on eBay sells new visors with lighted vanity mirrors, he was the actual oem supplier during GM production.

 

[lesterl]

Nice.......