Clarion CX501 radio head unit install into 2005 GMC Sierra Z71 Regular cab. Here’s the URL to the negative trigger circuit: http://www.the12volt.com/relays/p…
Clarion CX501 radio head unit install into 2005 GMC Sierra Z71 Regular cab. Here’s the URL to the negative trigger circuit: http://www.the12volt.com/relays/p…
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Actually the dimmer relay may not be working when the headlight switch is
in “auto” mode. I need to check the shop manual..