2002 Ford F-150, Viper 791XV Alarm/Remote Start

im trying to figure this out because i installed it in a class at my school, but my teacher helped. i want to get more into the car install scene and learn more about everyhting. so im planning to fix this myself. so if i do what you said what does that prove? what do i need to fix? i do have a t-harness hooked up.

If you did what I list above, and it works out the way I predict, it proves that you need to power up the BLACK/ green radio-accessory wire during remote start. I could be wrong---Extreme1 disagrees with me and thinks that powering the BLACK/ green is not necessary---but I think it is worth checking out. Regardless, if the check-engine light comes on when using the remote starter, but not when using the key..... That tells us that one or more of the truck's ignition or accessory circuits are not being powered up during remote start...........or that one or more circuits are not being powered correctly...........an ignition wire is powered as an accessory, or the opposite. ---If my test above works out, it proves that all you need to do is power up that one radio-accessory wire. ---If my test proves nothing, or if you choose not to do it..........another method would be to simply ensure that EVERY wire in the ignition-switch harness is being powered up EXACTLY as it would have been while starting the car with the key.........that should be a sure-fire fix too.

ok well i did the test but the light never came on when i remote started it. the first time i remote started my truck it took 5 days of using the remote start before the light came on. the gauges take about 15 seconds to turn on after the truck is on. so since that test didnt really work do i test all the wires to to see if they are working or what? and if i do have to power up the BLACK/ green or some other wire how do i do that?

btt

any other input that could help me?

Chris Luongo wrote: The installer should be able to clear the codes and the light by disconnecting the battery for a few minutes. If he's a real pro, he'll write down your radio presets before doing so, re-set them to your radio, and re-set your clock.

If he was a real pro he would have an OBD II reader and just erase the codes. hehehehe... JK... At anyrate just power all the ign and acc the exact way the car would normally do it and it would be a sure way to fix the problem.Certified Security Specialist

Always check info with a digital multimeter.

I promise to be good.

Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

ya but how do i power them up? thats what i dont understand. i need more of an explanation on how to do that instead of just telling me to do it.

anybody? how do i power the wires up?

come on guys. this was going good in the begining and now no one is answering. how do i power up the wires and fix my problem? please help.