My fiance has a automobile loan in her name as well as you have a lorry in both a names. We both have secure jobs which you have been during for a couple of years. She has great credit… you am operative upon my credit now as well as her father who is starting to co-sign upon a home loan has fine credit. What would you have to do in sequence to get a great possibility during a loan approval??

Your mortgage approval is going to be based on your debt-to-income (DTI) ratio and your FICO score. You need to be below 40% DTI and this is based on the monthly payments reported in your credit file.
If you have any credit cards you need to pay them off and keep them at $0 until you get your mortgage. This will report your monthly payment as $0 and reduces your DTI. It also boosts your FICO score by lowering your balance-to-limit ratio as well.
Your question is not detailed enough to give an exact answer, but a home loan officer looks at your credit score, a two year job history and your debt ratio (income vs. debt/monthly payments on credit).
Without getting too technical. You will need a minimum FICO score of 580 (for $0 down) for anyone signing on the home loan (FHA guideline)
Second is income vs. debt payments. Most require a ratio of about 43%. You could go higher if you have money to put down or assetts in the bank to make the bank feel better protected. If you make $2000 gross/month and have a car payment of $200 and a student loan payment of $50 you would qualify for a house payment of $610/month (PITI). Car payments only effect you in that by adding another $150 car payment you could only qualify for a house payment to $460.
(math, 43% of $2,000 is $860 in total debt payments, $610+200+50=$860)
If the house you want will have a payment of more than $610, you will either need to add your spouse (if they have a score of 580+) or add a cosignor to add income and lower the debt ratio.
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You should be able to find a good loan for both with a little legwork.
Check out Loan-Com.info and do a search for auto loans and mortgages. They have tons of loan lenders available at reasonable rates and affordable terms.