M998 tail light replacement issue?

[Mikei998]

I just replaced my worn out tail lights that were plastic and replaced them with aluminum housing tail lights and I can’t get them to work. Is there something different in the design of the light plastic vs aluminum housing? I reconnected the old light and it worked . Connected the new aluminum one and nothing works . What am I doing wrong? Any help would be greatly appreciated….

 

[Thunderbirds]

Short answer, yes, there are compatibility issues going one way (not sure exactly going plastic to metal or vice versa) but I have a digital copy of the Army PS magazine on my computer at home. I will look for it tonight and forward it to you.

This article spells out NSNs and what works and what doesn't.

Lee

 

[Mogman]

Make sure both mounting bolts are grounded.

 

[Thunderbirds]

I just replaced my worn out tail lights that were plastic and replaced them with aluminum housing tail lights and I can’t get them to work. Is there something different in the design of the light plastic vs aluminum housing? I reconnected the old light and it worked . Connected the new aluminum one and nothing works . What am I doing wrong? Any help would be greatly appreciated….

Found the piece, it's spelled out on the lower half. but this is talking about the lens on the body, maybe not the issue you are having, or is it? When you say housing, do you mean the entire body or the lens?

 

[Mikei998]

Found the piece, it's spelled out on the lower half. but this is talking about the lens on the body, maybe not the issue you are having, or is it? When you say housing, do you mean the entire body or the lens?

View attachment 923993

yes old ones are all plastic and the new ones are all aluminum. I had all aluminum on the front of my truck which I replaced with another set of aluminum and they work fine . The new aluminum ones i installed in the rear don’t work . I reinstalled the old plastic ones and they work .