Electrical Issues! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**KyleSeal** · 12-15-2022, 03:32 PM

Ive got a 78 GMC C25 Im working on getting some bugs worked out of. So here are my issues;

The turn signals hyper flash, and the bulbs are standard halogen bulbs. The left side will work, hyper flashing, and when the right side turn signal is put on, sometimes all four flash, sometimes not. The turn signal lever does not seem to effect it, it is a new part.

This is a customer's vehicle, from what he says it seems that this issue was present before rebuild the column.

Additionally, the gauge cluster does not light up when the headlight switch is pulled. He says the circuit board is new, and headlight switch is new too.

Any ideas?

12-15-2022, 03:32 PM	#1
KyleSeal Senior Member Join Date: Mar 2014 Location: Toano, VA Posts: 884	Electrical Issues! Ive got a 78 GMC C25 Im working on getting some bugs worked out of. So here are my issues; The turn signals hyper flash, and the bulbs are standard halogen bulbs. The left side will work, hyper flashing, and when the right side turn signal is put on, sometimes all four flash, sometimes not. The turn signal lever does not seem to effect it, it is a new part. This is a customer's vehicle, from what he says it seems that this issue was present before rebuild the column. Additionally, the gauge cluster does not light up when the headlight switch is pulled. He says the circuit board is new, and headlight switch is new too. Any ideas? __________________ "Sometimes I do serve as a good bad example. Glad to be of service." My Build Thread (1967 C10, lowered, EFI, daily truck): http://67-72chevytrucks.com/vboard/s...d.php?t=830809



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