My car is a 2007 Mazda bt50 gen1 4x4 model.
I changed the radio in the car for a Bluetooth one and now my car won’t start.
-The radio and all other accessories work.
-I ran a small cable from the battery positive to the Solenoid on the starter and the starter would crank over but the car wouldn’t start (even with key turned in in position), which to me looks like the starter is fine.
-I’ve checked all the plugs and connection everywhere to make sure I haven’t knocked them lose and it all looks good
-the car had an old Nokia hands free phone system which I pulled out, it was spliced into the radio wires to get power so I don’t think by pulling it out I’ve created this problem, I dont think it had a car alarm in it cos I don’t have a remote for it.
-I’ve tried plugging in the old radio to see if it would start with that and no luck
-the ignition cable that runs to the starter is black with a yellow stripe which I’ve found at the ignition, when I turn the ignition on the cable gets 12volts to it, but when I meter at the starter motor the same black and yellow cable doesn’t have 12volts at it, so somewhere the connection is broken. I’m thinking it runs through the ecu and I’ve somehow disabled something.
Any help would be useful as I’m now stuck in what to do,