Bus lighting issues

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

gizmologist2016

Junior Member
Joined
Dec 30, 2016
Posts
1
Reaction score
0
Ram Year
2015
Engine
hemi
My daughter just bought a 2015 ram1500 and we decided to add some accessory lighting and a mobility scooter lift for me, a back-up alarm and video cameras. This was the first time I ran into the CANBus system and it is a PITA for accessory wiring. I first noticed it after we connected and aftermarket back up alert to the BU lights. It motorboats while the light appears steady. As I work with remote controls in pro AV electronics, I realized the on board computer is doing this as it checks the bulbs. I have designed a simple circuit that accepts the data stream from the truck and will control any auxiliary lamp etc load you may want to add.

My circuit does not affect the on board computer's functions.
I have used this circuit to add turn signals mounted on the scooter lift, auxiliary brake lights and running lights as well. No additional loads are seen by the original light circuits. All additional lighting is powered by an added 12 VDC fused buss bar powered by a HD relay for aux loads. Email me with any questions you may have if you have run into this issue while accessorizing.
 

skidoo

Junior Member
Joined
Mar 13, 2019
Posts
3
Reaction score
1
Location
Edmonton
Ram Year
2015
Engine
5.7 hemi
I have the same problem with the new backup alarm I put in my 2015 ram 1500. Do you have a description or sketch of the circuit you put in to fix yours? thanks.
 

crash68

ACME product engineer
Staff member
Administrator
Supporting Member
Joined
Mar 20, 2016
Posts
10,698
Reaction score
16,705
Ram Year
2015
Engine
3.0 EcoDiesel
Why not run the back up alarm off the reverse pin in the trailer plug, no special circuit needed. You can wire it in from the back side using a Curt Manufacturing 56584 Trailer Connector:
https://www.amazon.com/dp/B007EA6WQU/
There are quite a few people that use this to run extra reverse lights mounted under or through the bumper. It's fused at 20 amps.
 
Top