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Hi, I have a 1st Gen Cummins. I want to install an air horn but am not sure if my battery can handle it. i also have HID headlights and marker lights. The battery already bounces around on voltage well charging it. Its a optima red top. Are the lights pulling to much Amps for my battery or does it need to be charged? Also can one batteries handle all this or do i need to install a second battery for accessories?
An Air Horn has nothing to do with the Battery.
HID's draw less than the regular lamps. It's not that much to begin with.
If your voltage is jumping around, you may want to look into your grounds. I think the 91 has the old standard 2 wire voltage regulator. Make sure the ground to the body is good and the pins aren't corroded. As I recall, that has a 90 amp alternator. More than enough.
A trick on the regulator is to loosen the mounting bolts and retighten them
2003- 3500 RWD Automatic. S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95, 50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC
Doesn't the air horn have to have power and ground from the battery? I will check that out.
Your thinking of the grid heater which is already in place, The air horn is not powered by anything electricalOriginally Posted by Kevin_gearhead
2003- 3500 RWD Automatic. S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95, 50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC
Doesn't the compressor need power though?
No. . .What compressor? That's the turbo which is driven by the exhaust.
2003- 3500 RWD Automatic. S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95, 50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC
A compressor that is on an air tank. Not on the block.
What are you talking about. Are you talking about a Beep Beep horn?
I thought you were talking about in intake air horn. Sheeesh You have to be more descriptive
If that's the case, yes the compressor needs electric. As long as the truck is running one Battery will be fine. Find out how bai an alternator you have. a 12 valve engine needs no electric to run. Just to start. It does need allot of power to start it. If that red top hasn't given you any problems in cold starting, then it's fine. It's your comment about the voltage jumping around that bothers me. Explain that better.
When is it doing it? What else is running? That alternator is just running the body. Is it just jumping up and down when it's cold?
2003- 3500 RWD Automatic. S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95, 50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC
Ok. Ya I recently noticed it when it is cold out and I turn my lights on.
It's your grid heater cycling that's making your charge go up and down. Once it warms up and you start going down the road it levels out doesn't it? If so, it's normal
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