The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Rear tail lights... Only some work but not always?

willett · 04-04-2014, 05:21 PM

Next time one of your lights cuts out pull it and stick a volt meter between the hot side and a COMPITENT ground. If your getting a full 13.whatever then you have more sanding to do. Make sure your box itself had good ground to the chasssis and the chassis is good to the engine/battery as well.

Don't forget, dielectric grease is your friend and just because your test light illuminates it doesn't mean your getting full power to that point

04-04-2014, 05:21 PM	#5
willett Another Day, Another Dollar Join Date: Nov 2008 Location: North Vancouver, BC Posts: 1,316	Re: Rear tail lights... Only some work but not always? Next time one of your lights cuts out pull it and stick a volt meter between the hot side and a COMPITENT ground. If your getting a full 13.whatever then you have more sanding to do. Make sure your box itself had good ground to the chasssis and the chassis is good to the engine/battery as well. Don't forget, dielectric grease is your friend and just because your test light illuminates it doesn't mean your getting full power to that point __________________ -78 K20 Cheyenne 454 long box, 4" lift, 35" MT's, '84 cab, '80 box "its hip to be square"