1978 GMC crew cab turn signal troubleshooting

The turn signals in our 1978 GMC stopped working. During a frustrating process we run through testing various parts of the system and perform checks to verify what works. For more information on us, what we do, and our projects, see our website at www.tradecraftspecialties.com. All music courtesy of Fesliyan Studios (www.fesliyanstudios.com) #wrenchwranglers #squarebody #chevytrucks #gmc #turnsignals #autorepair #truckrepair #trucks #gmctrucks #troubleshooting