First Alarm, 97 Honda Civic

Yes, through a relay. Refer to my picture above. Well maybe I should try connecting it to the actual dome light wire instead of something that triggers it.

The issue is that if the alarm sees that a door is open, it cancels the manual transmission mode, because it is possible that you put the car in gear when you were in the car. So, what is happening, is your domelight relay is making the alarm think the door is open. Kevin Pierson

Sorry, somehow missed the diagram before. Except you're still missing the point KP and I are trying to make, about the dome light. It shouldn't come on during remote start with the doors locked.

You guys are right, the dome light should turn off when arming the alarm to complete the MTS mode. It just hit me that my door panels are not installed. Maybe the pin that terminates the connection on the door is not being pressed in all of the way (because the missing door panels). Next time, I'll manually press the switch down myself and arm the alarm to test. I THOUGHT I did that yesterday and was sitting there wondering why the domelight was still on, then I heard the click on the relay which triggered the domelight to turn off. I could be wrong. We're almost there fellas! Almost done!

1st Test: 1) MTS procedure everything connected 2) Dome light turns off with Arming alarm 3) Remote start fail 2nd Test: 1) MTS Procedure 2) Wait until dome light turns off 3) Remote start success 3rd Test 1) Disconnect power to dome light relay 2) MTS procedure 3) Remote start success Clearly, the problem is that the dome light relay, in MTS procedure while still on, will cause the remote start to fail even if the arm command is sent turning the relay off. All other connections are correct (being that I'm able to remote start with the relay disconnected). Really strange.

Rewire the relay thus:- dome.bmp Make sure your ground is connected to 87 NOT 87a and you follow my (correct) pin configuration, also the diode as shown.

Thanks howie. What will adding the diode do? Will it take away the domelight capability when disarming regularly?

Well. It didn't work. Wired it just as per your diagram. Again, the funny thing is that during MTS procedure, the lights flash 5 times like the manual says, then it flashes once more and stays solid. That's when the domelight gets activated. Not sure what's causing this.

It should block any feedback and remember what I said about 87a, also have you checked your door switches yet? If they are the sliding type they corrode easily.

Yeah, checked door switches, checked everything. For some reason, that BLACK/ white wire is getting activated during the MTS procedure.