1974 GMC C/K Series Pickup Off Road Lights

The correct replacement for a Demco Master Cylinder 05680-C is the Replacement Master Cylinder part #5650. I spoke with Demco to confirm this for you.

The correct replacement master cylinder kit we have for your Demco setup is the part #DM5918 which comes with the lock out replacement.

I agree it is the right time to upgrade to a Lithium charger/converter as not all are Lithium compatible. I recommend using the Progressive Dynamics Mighty Mini AC/DC Panel and Converter/Smart Charger - 60 Amp #PD4060K which is a replacement for…

You do not want to use a holding tank heater like ThermaHeat #277-000164 on a battery but we do offer battery heaters specifically intended to protect one from extreme cold. You can see all such items on the page I linked for you.…

We do have a compatible grease seal for your 168255TC oil seal, however, we do not carry rubber coated seals in this size. The 168255TC oil seal was designed to work with oil bath hubs on a 3,500 lb axle. For the most part, axle manufacturers have…

From the looks of the photo you sent it does not look like you have an OEM suspension system on your boat trailer. I recommend securing the suspension rail to the trailer frame in a more secure manner like drilling and using bolts so that it does…

Basically, a free backing brake assembly like #T4423400, will have one shoe that is shorter than the other and the bracket will be a different shape. On a regular assembly, the shoes will by mirror images of each other. Also, on a free backing…

As it seems you already know, when installing a trailer brake controller on your 2007 GMC Yukon you will need to locate the two wires under the hood that need to be connected to fully activate the…

A #93 incandescent bulb has a single contact bayonet base, and there are a couple of options for LED bulbs that will replace these. You can choose a bulb that gives off either a warm or cool light; I have added a photo showing the difference…

I spoke with my contact at Progressive Dynamics and they informed me that the Lithium Converter for WFCO RV Power Centers part #PD4655LIV does work as an upgrade for the Parallax 7355. It has the same housing as the Replacement Converter for…

Having the extra amperage of the Progressive Dynamics Mighty Mini AC/DC Panel and Converter/Smart Charger - 60 Amp #PD4060K has no down side.…

You'd need a new panel like the Progressive Dynamics Mighty Mini part #PD4045KA which is the most similar to your Parallax 7345 except is…