Is the Rearm wire mandatory?

I found some remtoe starter doesn't have rearm output. Is there any problem for some vehicles?

The vehicle does not care, but the owner might. There are a lot of vehicles in which you cannot arm the factory security system via a wire. This connection is only used when the vehicle can be armed via a wire.

It is also used on a lot of vehicles to pulse a doorpin wire to shut off retained accessory power or automatic headlights. Required? No. But when you get calls from customers compaining about there battery being dead you will wish you had hooked it up.

That too! Missed that one, thanks JWorm!

JWorm wrote: It is also used on a lot of vehicles to pulse a doorpin wire to shut off retained accessory power or automatic headlights. Required? No. But when you get calls from customers compaining about there battery being dead you will wish you had hooked it up.

which vehicles and if this alarm has auto-rearm, will it work for that?

GM product! Be careful whose advice you buy, but be patient with those who supply it.

thepencil wrote: GM product!

thanks. Which model and year?

Buick Regal 2002, negative pulse to shut off radio. GMC Jimmy 2002...etc. Be careful whose advice you buy, but be patient with those who supply it.

equate wrote: thepencil wrote: GM product! thanks. Which model and year?

Do you really want someone to list every vehicle it is neccessary to hook a rearm wire up on??? Here's what I do. When you shut the car off with the key does the radio shut off? If it stays on until a door is opened I hook the rearm wire to a true door trigger. If the headlights stay on until a door is opened I also hook up the rearm. On some of these vehicles those circuits may shut off after 5 minutes, maybe even 15. But on some vehicles those certains will stay on until the battery dies or a door opens. Nissans with auto headlights, and recent Toyotas with auto headlights are just a few. I've heard a 2005 GM van will keep the radio on until a door is opened or the battery dies. Previous years they would shut off after a few minutes.

thanks a lot for above friends.