I bought an 04 f150 XLT. it came with a train horn. When I try to sound my horn I hear a grinding noise. Wiring not frayed. Installed correctly. Could it be a grounded compressor. It came with two installed train horns and two compressors. No kinks or clogged lines either. Please help. I want this to work.

 

Do the horns work without using the compressor (on a different air source)?

 

Good. Put in a regular horn.

 

Haven't tried. They are hooked to two compressors. This weekend I'll be able to actually get under to look at it fully.

 

I have two Auto - Lite electric trumpets (Dated 6-47, 18" & 24") that came off of a 1966 Dodge bread truck. Don't know what they actually came off of. Wife absolutely hates them. But they work great.

 

It's been a year but, it's cool that you've got those vintage Auto-Lite electric trumpets from a '66 Dodge bread truck! Even if the wife isn't a fan, it's awesome that they're working like a charm. If you're ever considering a different vibe, maybe check out this Milwaukee Train Horn from Boss Horns https://bosshorn.com/products/milwaukee-train-horn - could be a fun way to mix things up!

 

Wife bought me a new truck, and there is no room to fit the horns.