viper 5501 '94 volvo 850

Trying to get a Viper 5501 installed in my '94 Volvo 850 2.4L. I found multiple wire diagrams on the internet and all of them have the same wire color information. With my Viper 5501, I hooked up Starter 1, Ignition 1, Accessory 1 and 12v Constant to the appropriate wires per the wire diagrams. Also hooked up the RED / black (accessory/starter input) to 12v constant as well. Tapped power for brain off of 12v constant, grounded the ground on H1 along with the neutral safety switch to a know good location under the dash. Plugged in the toggle switch and set it to on. Programmed viper per manual (set transmission mode to automatic, changed tach sensing to voltage) done. Tested remote starting and it worked! Shut down with remote. Tried to remote start again with remote and the main vehicle power shut off, but came back shortly. Tried remote starting again and vehicle power shut off again. Tried starting with the key and it just cranks and cranks with no start. I have tried locking/unlocking many times with factory remote to no avail. Any suggestions would be greatly appreciated as I'm currently without a vehicle. Thanks all!

After unplugging all connections from the Viper brain, disconnecting power to the vehicle for approximately one minute the vehicle starts again. Also noticed the viper brain is not holding programming and doesn't recognize when a door is closed even tho I have it hooked up to the appropriate wire that has been meter verified. On a side note, I had everything working correctly, but as soon as I unplug the power to the vehicle, its a complete crap shoot if it will work or not when I reconnect the power to the vehicle. Went on a short drive and the engine randomly shut down as I was driving. All the wires I tapped into have been metered and verified to be the correct wires. What else could be wrong?

Some thoughts:- Bad solder joint Immobiliser by-pass required? Did it start with the key in the ignition? The engine shut down seems to be an ignition/fuel pump problem. Look at fuel pump relay. Damaged engine management?

When it lost power was that complete failure or was the ignition still engaged? Where did you connect TACH? Bosch injection/ignition systems on Euro GM and VW have given me grief in the past with tach leads connected to an injector wire. You could even have a faulty ignition switch.

No Immobilizer required. Wouldn't remote start with key key in ignition. Damaged engine management? - I suppose it could be a weird coincidence. Car seemed to be working fine before installing remote start. When the car died the engine shut off but everything else remained on. Ill check the fuel pump relay. this is just baffling to me as the correct wires have been tapped. The viper brain I bought was a refurb. Is it possible that it was faulty and messed somethong up? Thanks again everyone!

Please don't tell me that not only was it refurbished but via fleabay.

Oops. And also after looking at everything...I think the viper brain is messed up and shorted something out in my car. And since I'm not an authorized installer and since I bought it on eBay I suppose I have zero recourse?

Another brain would be great, however, since hooking it up last night and trying to remote start it...the car will not start. Even with viper brain unplugged from the car. I think when i tried to remote start it the first time, the brain fried something internally on my car as there was a big blue spark from the negative terminal of the battery when i tried to remote start it a second time last night.