EXHIBIT 10.6


                               EXTENSION AGREEMENT
                      PROMISSORY NOTE DATED MARCH 31, 1999
                           PRINCIPAL AMOUNT: $400,000


The Parties to the  Extension  Agreement  are  OneSource  Technologies,  Inc., a
Delaware  corporation,  whose address is 2329 West Mescal,  Suite 304,  Phoenix,
Arizona 85029  (hereafter  the "Holder")  and Cossack  Financial,  LLC, a NV, AZ
corporation,  whose  address  is 7373 N  Scottsdale  PO  #16213  (hereafter  the
"Maker").

Recitals

Whereas,  Maker  has  made in favor  of  Holder  that  certain  Promissory  Note
(hereafter the "Note") a copy of which is attached  hereto as Exhibit "A" in the
principal  amount of Four Hundred  Thousand  ($400,000)  Dollars dated March 31,
1999 and payable  one  hundred  and eighty  days after date at six (6%)  percent
interest; and

Whereas,  the Note is currently due and payable at its original principal amount
plus accrued interest; and

Whereas,  the Parties  hereto  desire to extend the  maturity of the Note and to
provide for the additional  security of a joint brokerage account into which the
collateral  for the payment of the Note,  consisting  of 1,050,000 (MT initials)
shares of OneSource  Technologies,  Inc. common stock (hereafter the "Shares" or
the "Stock") shall be deposited by Maker; and

Whereas,  the  Parties  desire to provide  for the  orderly  liquidation  of the
Collateral so as to prevent  distortion in the market price of OneSource  common
stock which may occur upon a large lump sum sale;

Now Therefore For Good and Valuable Consideration The Receipt Of Which Is Hereby
Acknowledged, It Is Agreed As Follows:

Agreements

1.  Maker  hereby  acknowledges  and agrees  that the  amount of the Note,  plus
accrued  interest,  which  was due and  payable  as of  October  1, 1999 is Four
Hundred and Twelve Thousand  ($412,000.00) Dollars and No Cents. The term of the
Note,  which has  expired as of the date of the  Extension  Agreement,  shall be
extended  and the  maturity of the Note shall be upon  demand by Holders,  which
demand may be made at any time in the  Holder's  sole and  absolute  discretion,
with no conditions precedent to such demand, other than giving Notice and Demand
for Payment, and provided further that Maker shall make payments on account upon
the liquidation of the Collateral,  as required by Holder in accordance with the
provisions set forth below.

2. The Note is  secured  by the  security  interest  of Holder in the  Shares of
OneSource  Technologies,  Inc.  common  stock.  This Stock shall be deposited by
Maker and held in a joint signature brokerage account with Fidelity Investments,
Account Number  Y03155837,  listing both Maker and Holder as joint  signatories.
Both the Stock and any  proceeds  of the sale of the Stock  shall be held in the
account or in a money  market  account  with  Fidelity  which is  identified  as
Account  Number  291662471  and which shall be subject to the direction of Maker
and Holder as follows:

        a) Holder shall have the absolute discretion to pay or appoint to itself
        up to one hundred (100%) of any existing  balance of the proceeds of any
        Stock sale in the account either as such sales occur or later as

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        Holder shall in its sole and absolute  discretion  deem  advisable.  Any
        amounts  disbursed  from proceeds held in the account to Holder shall be
        applied first to any costs associated with the collection of the Note or
        sale of any  security,  then to  accrued  interest,  and  finally to the
        principal  balance  due.  Holder  shall have no interest in any proceeds
        above the  amounts  due under the Note,  and upon  receiving  the entire
        proceeds as required  by the Note,  shall  consent to the removal of its
        name from the accounts.  Maker shall make no  disbursements  of proceeds
        either  to  itself  or to any third  party  without  the  prior  written
        approval of Holder.

        b) The  Shares of Stock held in the  account  may be sold in whole or in
        part  and  from   time  to  time  by  Maker,   for  good  and   valuable
        consideration,  which shall be deposited in the money market  account as
        proceeds.  Maker shall consult with, and obtain prior approval of Holder
        prior to any private placement of any Shares. Maker shall time all sales
        of Shares which it makes in such a way so as not to adversely impact the
        price of the Shares in the marketplace.

        c) In the event that insufficient Shares are sold so as to make periodic
        and satisfactory progress on the payment of the loan, which satisfactory
        progress  shall be  determined in the sole  discretion of Holder,  Maker
        agrees that, in addition to its other remedies at law,  Holder may, upon
        ten (10) days  notice to Maker,  assume  control of the  account and any
        remaining Stock or proceeds,  and sell such Stock for the benefit of the
        account of Maker.  Maker hereby waives, as to any proceedings under this
        provision by Holder to enforce its interest, any claim, cause of action,
        or damages or defense to  deficiency  in payment on the Note arising out
        of the sales or  failures  to sell Stock by Holder  during any period in
        which Holder is actively trading in the account.

        d) To  facilitate  Holder's  ability to manage the  account as  provided
        herein for the benefit of Maker, Maker hereby grants to Holder,  through
        its authorized representative, Donald Gause or such other representative
        as  OneSource  shall name from time to time,  a full power of  attorney,
        coupled  with an  interest,  to trade in the  account,  and buy and sell
        securities  therefrom in Holder's sole  discretion as to price,  amount,
        and timing, and to receive the proceeds therefrom, and to apply the same
        to  payments  due from Maker for the  benefit of the account of Maker at
        Holder's discretion.

3.  Notice,  in  writing,  shall be given by  Holder of its  election  to demand
repayment of the entire remaining balance of the Note. Notice shall be effective
when hand delivered to the noticed party or five (5) days after mailing, postage
prepaid in the U.S.  Mail to Maker's  last known  address,  or upon the next day
following  the date of deposit  of the  Notice  with an  overnight  carrier  for
overnight delivery.

4.  Maker  shall  have ten (10) days  grace  period  from the date of Notice and
Demand for  Payment in which to make  payment in full of the Note.  In the event
Maker does not pay, in full, all amounts due hereunder  prior to the termination
of the grace period, Maker shall be in default under its obligation.

5. From and after default,  and until the obligation of the Note,  together with
all accrued interest thereon and any expenses in connection therewith,  shall be
paid in full,  the Default  interest  rate of fourteen  (14%)  percent per annum
shall be applied to the outstanding balance due.

6. All of the terms and  conditions of the  Promissory  Note shall apply to this
Extension Agreement to the extent not in conflict herewith.





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     Dated this 1/3/00 day of January,        2000



"Maker"                                                                 "Holder"

Cossack Financial, L.L.C.                     OneSource Technologies, Inc.

By: /s/Michael Fisher                          By: /s/ Donald Gause

Its:/s/Michael Fisher                            Its:Secretary


Fidelity  Investments  hereby  acknowledges  receipt  of  an  original  of  this
Agreement  for the  benefit  of Holder,  a named  signatory  on  Account  Number
Y03155837, and money market Account Number 291662471.

                                          Fidelity Investments

                                          By:__________________________

                                          Its:__________________________


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