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  1. C

    How many horns on a 79 C10 Custom Deluxe

    I recently installed a new light circuit harness under the hood on my 79 C10 Custom Deluxe and it has connections for two horns. However, I have only one horn. Can anyone tell me if two horns were standard on all 79's or did some have only one horn? thanks Curtis Wells
  2. C

    Modern Auto Relays

    Can I use a modern auto relay-30 amp, 5 pin- in place of the original GM relay on my 79 C-10 for the blower motor circuit? Way, way cheaper than an original replacement style.

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