starter not cranking on remote start

Simple question...why does the vehicle manufacturer use 2 starter leads and keep them separate? You are heading for lots of trouble and $$$$. Use a relay from the satellite harness.

x2 with howie. There is a reason they are separated. A lot of the Toyotas/Lexus/Scion vehicles use that second starter wire for a cold-start injector. By combining it with the other one, you may cause harm down the road with the fuel system or other components. Not to mention Check Engine lights and other issues that can arise with the car's computer. It's not hard to wire a relay to control that 2nd starter wire. A relay that cost a few dollars will never compare to having to fix any major computer or mechanical issue with your car later on. Good luck!

And this will answer your next question:- ssr.bmp The 1N4004 diode shown on the NEG starter output to 85 on the relay is mandatory, it will save frying the R/S brain. 87a isn't used. Standard Bosch/Tycho "cube" relay available anywhere or Radio Shack inc. the diode.