Need 12 V power source
#21
How about the stock horn wiring? Does it go through a relay? Maybe I could just connect the stock horn, that uses less current, to my extra switch and run the airhorns from the steering wheel horn button.
#22
Originally Posted by Lee3333
How about the stock horn wiring? Does it go through a relay? Maybe I could just connect the stock horn, that uses less current, to my extra switch and run the airhorns from the steering wheel horn button.
http://n8zcc.com/pics/HHR/HornSchematic.gif
#23
Thanks Monster. So with 10 amps, I guess I cant run the compressor off the stock wiriing. So I am back to the drawing board. It seems crazy to have to run a high amp line from the interior fuse box or from the battery, though.
#24
Well, I remember seeing a 50 amp feed feeding the underhood fuse box. Why can't you take your tap there?
The underhood fuse box feeds power to the interior fuse box/BCM by a 40 amp feed, so it would not make sense to tap there for the power.
The underhood fuse box feeds power to the interior fuse box/BCM by a 40 amp feed, so it would not make sense to tap there for the power.
#26
Originally Posted by Lee3333
That would be great-where is it? Also, the headlights draw a lot of current-what feeds them?
Look around the under hood fuse box, a 50 amp cable is going to be sizeable so you should be able to see it. I don't have any pictures of it's location, sorry.
#27
I see that there are several fuses in the engine compartment fuse box of 30 amps. So the box itself can handle it. What about using a spade terminal to one of the empty fuse slots???
#29
I am guessing that they must come from a main wire that can carry the maximum load of any fuse in the box. So, in theory I should be able to tap into any of the unused plugs. I am just a little apprehensive due to my previous problem after using the powersteering post (I lost power there for about a week, then it mysteriously appeared again).
#30
I am getting ready to give up on these stupid airhorns. I took the car to the Chevy dealer for the antennal to be ordered, then asked him about a good power source. He suggested one of the empty fuse slots, like I suspected. But when I tried, it did not work either. Apparantly although there are 40 and 30 amp fuses in the box, they dont draw anywhere near the max.
I am going to see if I can find a low-draw compressor or I will abandon the air horn idea and just get some louder electric horn(s).
I am going to see if I can find a low-draw compressor or I will abandon the air horn idea and just get some louder electric horn(s).