The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Does Auxiliary fuse box need constant power?

RustyPile · 10-21-2020, 08:33 PM

To expand on what wrenchbender said.. I wouldn't run all those items through a single relay, continuous duty or not.. Combined with the current demand of the other items, that's a lot to ask of one relay.. Some cooling fans can draw upwards of 20 amps or more by themselves.. Run power through a fusible link to the auxiliary fuse box.. Come off the box with individual relays for each item that are controlled by the ignition switch..

Another suggestion: Install "reminder" lights on the various circuits to remind you to turns things off when you're finished with the job..

10-21-2020, 08:33 PM	#5
RustyPile Registered User Join Date: Dec 2017 Location: Elkhart, Texas Posts: 1,549	Re: Does Auxiliary fuse box need constant power? To expand on what wrenchbender said.. I wouldn't run all those items through a single relay, continuous duty or not.. Combined with the current demand of the other items, that's a lot to ask of one relay.. Some cooling fans can draw upwards of 20 amps or more by themselves.. Run power through a fusible link to the auxiliary fuse box.. Come off the box with individual relays for each item that are controlled by the ignition switch.. Another suggestion: Install "reminder" lights on the various circuits to remind you to turns things off when you're finished with the job..