# SR Wiring Help Urgently Help , Car Almost Burnt Down **URL:** \ **Category:** SON240sx Automotive\ **Created:** [June 30, 2004, 5:18pm UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217 "2004-06-30T17:18:53Z")\ **Posts on this page:** 16\ **Page:** 1
**Author:** ![DTS](https://avatars.discourse-cdn.com/v4/letter/d/8491ac/32.png) [@DTS](https://forums.speedlife.net/u/DTS)\ **Post date:** [June 30, 2004, 5:18pm UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217/1 "2004-06-30T17:18:53Z")
So, sorry to make this long but im giving the most detail of the situation i can. Im doing the battery tray area wiring in my SR and what happens is the following, When the ignition is turned on, the harness will begin to smoke and the black think wire comming from the SR harness will begin to smoke, only that wire. So imidiatly I turned off the key and disconnected the battery as fast as possible, the insulation on that wire had melted, so i replacd the melted section 10" Long, with new wire, same thing, but this time i held my hand on the wire to see if it was begining to warm up, and shut it off when it did to avoid damage. Origionally I wired up this section wrong, then re did it and the same problem happend! The motor WILL crank, without a problem and all interior lights work fine and outside lights. I followed the heavy throttle wiring chart but i found it very confusing So here is what i have so far, and I have no idea if this is what its supposed to look like, ![http://img78.photobucket.com/albums/v252/S13Dorifto/Help/Wiring_Help.jpg](http://img78.photobucket.com/albums/v252/S13Dorifto/Help/Wiring_Help.jpg) So Basically im stuck. Would you guys please give me your idea on whats wrong? Thanks Alot ---
**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\ **Post date:** [June 30, 2004, 5:33pm UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217/2 "2004-06-30T17:33:45Z")
Im confused why are there 4 wires connected all into one spot? Where do the Red Wire, Red/Blue Wire and the Brow wire go to? ---
**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\ **Post date:** [June 30, 2004, 5:39pm UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217/3 "2004-06-30T17:39:44Z")
This is how it should be connected: SR Harness Wire Color Use KA Harness Wire Color Black / Pink stripe Fuel Pump Relay Black / Pink stripe Green / Orange stripe Transmission Neutral Sensor Green / Orange stripe Red / Black stripe ECU Relay Red / Black stripe Green / Yellow stripe AC Relay Green / Yellow stripe Red ECU Backup Power Red Black / Red & Blue / Red (Note: connect 2 wires to 1) Main Ignition Power Black / Red stripe Black / White stripe ECU Power Black / White stripe Blue / Green stripe AC Relay Blue / Green stripe Black / Yellow stripe Idle Air Control Valve Power Black / Yellow stripe Brown (to O2 sensor) O2 Sensor Power Any 12v switched source ---
**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\ **Post date:** [June 30, 2004, 5:43pm UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217/4 "2004-06-30T17:43:28Z")
Sounds like you have a short somewhere dude… Where I don’t know, Pull off all the wires, and connect each one individually through an amp meter and see which one draws the most currant. Take that one and then check for shorts… ---
**Author:** ![DTS](https://avatars.discourse-cdn.com/v4/letter/d/8491ac/32.png) [@DTS](https://forums.speedlife.net/u/DTS)\ **Post date:** [June 30, 2004, 6:08pm UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217/5 "2004-06-30T18:08:17Z")
Problem Solved ---
**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\ **Post date:** [June 30, 2004, 6:09pm UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217/6 "2004-06-30T18:09:22Z")
You are welcome sir. Turned out to be a grounding issue. The Brown wire that he replaced with the burnt up black one was actually a direct ground. ---
**Author:** ![Sasha\_SG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sasha_sg/32/5477_2.png) [@Sasha\_SG](https://forums.speedlife.net/u/Sasha_SG)\ **Post date:** [June 30, 2004, 9:26pm UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217/7 "2004-06-30T21:26:30Z")
scott you’re a silly silly man haha ---
**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\ **Post date:** [June 30, 2004, 9:28pm UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217/8 "2004-06-30T21:28:04Z")
Now only if Sasha was a silly silly man and we could fix his car that easily. ---
**Author:** ![Sasha\_SG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sasha_sg/32/5477_2.png) [@Sasha\_SG](https://forums.speedlife.net/u/Sasha_SG)\ **Post date:** [June 30, 2004, 9:45pm UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217/9 "2004-06-30T21:45:29Z")
mines not as easy as soldering grounds and 12v leads together i WISH i could see the smoke. ---
**Author:** ![iQuAGoD](https://avatars.discourse-cdn.com/v4/letter/i/f05b48/32.png) [@iQuAGoD](https://forums.speedlife.net/u/iQuAGoD)\ **Post date:** [July 1, 2004, 10:52am UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217/10 "2004-07-01T10:52:41Z")
Shine glowsticks on the harness and it shall show you the problem. ---
**Author:** ![DTS](https://avatars.discourse-cdn.com/v4/letter/d/8491ac/32.png) [@DTS](https://forums.speedlife.net/u/DTS)\ **Post date:** [July 1, 2004, 11:13am UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217/11 "2004-07-01T11:13:55Z")
Now my ground from the motor to the firewall the little clip with braided wire is smoking when i turn the key the motor turns over once then the connecttion smokes and it stops cranking 😢 Whats wrong _angry_ ---
**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\ **Post date:** [July 1, 2004, 12:18pm UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217/12 "2004-07-01T12:18:46Z")
check the ground on your motor from your battery sounds like your using the little grounding strap to ground your starter motor ---
**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\ **Post date:** [July 1, 2004, 12:42pm UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217/13 "2004-07-01T12:42:31Z")
Looks like Scott didn’t know that a car’s starter motor cannot ground it self through that little tiney carroded grounding strap on the back of the block. It need’s a seperate min 8 gauge wire from the batt to crank through. ---
**Author:** ![iQuAGoD](https://avatars.discourse-cdn.com/v4/letter/i/f05b48/32.png) [@iQuAGoD](https://forums.speedlife.net/u/iQuAGoD)\ **Post date:** [July 1, 2004, 11:22pm UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217/14 "2004-07-01T23:22:04Z")
> [@SHIFT\_SR20DET](#): > > Looks like Scott didn’t know that a car’s starter motor cannot ground it self > through that little tiney carroded grounding strap on the back of the block. > > It need’s a seperate min 8 gauge wire from the batt to crank through. It doesnt need 8ga. Just ground your block, make sure you sand down the paint on your battery tray before reconnecting the main block to chassis ground. You shouldn’t run the car off that dinky braided ground strap. ---
**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\ **Post date:** [July 2, 2004, 11:00pm UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217/15 "2004-07-02T23:00:05Z")
> [@iQuABoB](#): > > [quote=SHIFT\_SR20DET]Looks like Scott didn’t know that a car’s starter motor cannot ground it self > through that little tiney carroded grounding strap on the back of the block. > > It need’s a seperate min 8 gauge wire from the batt to crank through. It doesnt need 8ga. Just ground your block, make sure you sand down the paint on your battery tray before reconnecting the main block to chassis ground. You shouldn’t run the car off that dinky braided ground strap.[/quote] It doesn’t need 8ga? Well it sure won’t crank through that little grounding strap on the back of the block as Scott found out by trying this. Grounding your bock is basically what I said by supplying the Starter Motor it’s own ground wire which needs to be a min of 8ga to handle the current draw from the starter motor. ---
**Author:** ![DTS](https://avatars.discourse-cdn.com/v4/letter/d/8491ac/32.png) [@DTS](https://forums.speedlife.net/u/DTS)\ **Post date:** [July 3, 2004, 8:35am UTC](https://forums.speedlife.net/t/sr-wiring-help-urgently-help-car-almost-burnt-down/81217/16 "2004-07-03T08:35:22Z")
problem was, they battery ground from the intake to the battery tray wasnt tightend down all the way so the contact wasnt clean, its all fixed now.