Reverse Indiglo Problems

I just got a set of reverse indiglo’s from a friend who put them in and 2 days later they stopped working.
I installed them in my car with the intention of just using them as white faced gauges.
well once getting them in I discovered that with only the temp gauge and the fuel gauge…the two of them work fine.
as soon as I plug either the tach or speedo in none of them work.
I was wondering if anyone has an idea’s on how to fix this problem. OR if I can just cut the relay out of the circuit and just wire them up directly?
I plan on trying the drirect approach in the morning.

found out whats wrong…my friend screwed the screws in the middle on the tach and speedo too much and it grounded them out so now they don’t work…I’m gonna try and ghetto fix them but I don’t have my hopes up :stuck_out_tongue: already orded a new set