2008 scion tc wiring remote start/alarm

I was gonna do that, but that wire is a (-) wire and the cars second starter wire is a (+)

either way I hook it up i still cant get it to start. what does (-) shutdown mean?

you can wire up the additional relay by two methods.

IF YOUR UNIT HAS A NEG (-)  250mA OPTIONAL OUPUT FOR ACC, START, IGN

85 - constant 12v

86 - 250mA (-) output from unit87 - high current 12v30 - to second starter wire on car

OTHER METHOD

85 - ground out when running from unit

86 - start wire from car - just splice into the starter wire 87 - high current 12v30 - to second starter wire on car

i suggest you use the first method, its always easier and more reliable IMO.

now, your (-) shutdown diagnostics, open up your hood, and look to see if your hood pin is touching ground. if it is make sure it has clearance and it should start. Another possibility is the E-brake wire.tkea the E-brake wire and wire it straight to ground. this is the only reasons i could come up with if your unit gaves a negative shutdown diagnostics.