Using A 7 Way Tester I Am Getting 3 Functions To Light Up At The Same Time, Why?

Updated 09/02/2025 | Published 06/19/2025

Question:

2024 LEISURE TRAVEL SPRINTER CHASSIS 7 WAY PLUG AT REAR WHEN I PUT MY TESTER TO CHECK THE LIGHTS 3 LIGHTS BLINKING AT SAME TIME ON MY TESTER ANY IDEA WHY

asked by: MIGUEL

Expert Reply:

Hey Miguel,

Typically when using a tester and getting 3 functions blinking at the same time it indicates and issue with the vehicle end or the wiring or connector. It is most likely a short circuit of sorts or a bad ground wire. The bad ground would cause it to send power to multiple functions at once. I would double check the ground on your vehicle along with the wiring connections to see if there is a frayed connection or a ground wire not properly grounded.

If that does not solve your issue let me know and I can continue to troubleshoot.

expert reply by: Nick S

Nick S.

9/2/2025

Hey Miguel, Did you have a chance to check the ground and wiring connections on your vehicle? If you're still having trouble, I'm here to help you troubleshoot further.