Regardless of what the viper has-- people running 50 amp relays (even the ones from Mopar for the viper fan) have shown to fail in as little as 6 months time-- why? Most likely the load-- and associated drain on the battery that people subject their truck to that the Viper will never see (fan on 99% of the time while towing, big stereos, fog lamps, a ton of low speed driving, etc.) That load can underpower the relay... try flipping a light bulb on and off a bunch of times-- eventually it'll pop due to the high load demand. I've built my Viper wiring kit on a solid foundation, that is more than 'just enough' in terms of relays/wiring. The fan runs 30-35 amps continuous on low speed, and 50 amp draw on initial turn on. High speed is near 40 amps continuous. I'd hate to have someone running their configuration and have a relay fail in AZ in the middle of the summer...
Sam
www.socaldakota.com
619-274-1292
>
> From: "Bernd D. Ratsch" <fasstdak@hotmail.com>
> Date: 2004/06/27 Sun PM 07:38:57 EDT
> To: <dakota-truck@dakota-truck.net>
> Subject: RE: DML: Viper Fan - Technical Info?
>
>
> Again...and strangely enough, the actual Vipers only run 50 amp relays - no
> need for 75amp units.
>
> - Bernd
>
> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net
> [mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of srp@cox.net
> Sent: Sunday, June 27, 2004 3:16 PM
> To: dakota-truck@dakota-truck.net
> Subject: Re: DML: Viper Fan - Technical Info?
>
>
>
> The 40 won't be enough... at least over time. My kit which is going
> through durability testing now runs 2- 75 AMP Bosch relays, and 50 amp fuse.
> So far no issues, and nothing but good results.
>
> Sam
> www.socaldakota.com
> 619-274-1292
>
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