[DeTomaso] Fw: Questions on the Rick Moseley relay kit

[Will Demelo]

Does anyone have a wiring diagram for the Mosely relay kit?
Will
----- Original Message ----- 
From: "Doug Braun" <doug at silicondesigns.com>
To: <mikeldrew at aol.com>; <asajay at asajay.com>; <detomaso at realbig.com>
Sent: Wednesday, July 01, 2009 12:55 PM
Subject: Re: [DeTomaso] Questions on the Rick Moseley relay kit


> Mike wrote >>>:
>
>>>>Again there's a misunderstanding of what the relay kit is, and what it
> does.  The bank of relays on the kit is used to control the headlights, 
> not
> the fans.
>
> I don't have a diagram for Rick's kit but your statement above implies 
> that
> Rick's kit doesn't solve the "fan current through the ignition switch"
> problem.  Does it?  Since Asa Jay's concern was about fan relays, my 
> intent
> was to show a simple way to solve the "fan current through the ignition
> switch" problem without the expense of Rick's setup.  I very much like the
> looks and quality of Rick's system but some prefer to keep the car looking
> as stock as possible.
>
> -----------------------
>>>>My car operates in the same manner and I find it a nuisance.  I have a
> battery disconnect that I always use because there's no good reason to 
> drain
> the battery spinning the fans to cool water in the radiator when the 
> engine
> isn't running.
>
> Like I said "Some may not like this (run till cool) mode of fan operation"
> but I prefer it.  Not just for the racing reasons I cited in my last email
> but also because it's difficult to hear your fans spinning when the engine
> is running due to the loud exhaust.  Every time I turn off my car I hear 
> the
> reassuring sound of my fans.  I once caught a failing fan motor this way
> because it was making a squealing noise you'd never hear with the engine
> running.  The energy used by the fans in the 2 minutes or so it takes for
> them to shut off is only about 1% of the capacity of a typical car 
> battery.
> If your battery won't handle this, you need a new battery.
>
> ------------------------
> Here's the mod again, in a nutshell, with directions for wiring it either 
> as
> a "run till cool" or "turn off with the key" type system.  The "turn off
> with key" method only requires an extra wire and "4-terminal" type relays.
>
> Tap off the alternator (load) side of the ammeter with a 12AWG wire over 
> to
> a small auxiliary ATC type fuse block screwed to the firewall near the 
> stock
> main fuse panel.  Be sure to put corrugated plastic cable covering over 
> the
> 12 AWG wire between the ammeter and the auxiliary fuse block.  Move the 2
> thick pink fan relay feed wires from the main fuse panel's #11 & #12
> locations to separate 15A fuses in the new auxiliary block.  For a "RUN 
> TILL
> COOL" type system, you're done.
>
> For a "TURN OFF WITH THE KEY" type system, replace the stock 3-terminal 
> fan
> relays near the radiator with 4 terminal relays.  Then add an additional 
> 18
> AWG wire connection between the load side of fuse 11 and one of the coil
> terminals on both relays.  If you buy an ISO type relays whose terminals 
> are
> conveniently numbered, connect them as follows:
>
> Terminal 85 via 18AWG wire to load side of fuse 11.
> Terminal 86 to temperature switch.
> Terminal 30 via pink wire to auxiliary fuse block.
> Terminal 87 to fan.
>
>
> Doug Braun
> blue73L #5505
>
>
>
>
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