Vicfreg 773 Report post Posted February 9 It was not clear to me from looking at the wiring diagrams, which wires were for the backup lights, and which are for the Neutral Safety Switch. Also, any tips on installing this switch? It looks like I need to remove my shift handle, which I am not sure I can do from inside the car..... Vic Quote Share this post Link to post Share on other sites
Midlife 814 Report post Posted February 10 red/blue are NSS; black/red are backup lights. Quote Share this post Link to post Share on other sites
Vicfreg 773 Report post Posted February 10 Thanks, I knew you would know that!! Quote Share this post Link to post Share on other sites
aslanefe 333 Report post Posted February 10 3 hours ago, Vicfreg said: Also, any tips on installing this switch? It looks like I need to remove my shift handle, which I am not sure I can do from inside the car..... You do not need to remove the shift handle to install that switch, it is installed on the transmission over the shift shaft. 1 Mike65 reacted to this Quote Share this post Link to post Share on other sites
aslanefe 333 Report post Posted February 10 https://bcbroncos.com/shop/drivetrain/auto-trans/21-52041-c4-neutral-safety-switch/ See the photo at the link above for location of that switch. Quote Share this post Link to post Share on other sites
Vicfreg 773 Report post Posted February 10 My car was originally a FMX and it was on the shifter, not the trans. My shifter base has a hole in the side for the wiring to pass through. I realize now I have the wrong switch….. Quote Share this post Link to post Share on other sites
aslanefe 333 Report post Posted February 10 That is why I said "that switch" :) Quote Share this post Link to post Share on other sites
aslanefe 333 Report post Posted February 10 1 hour ago, Vicfreg said: As far as I remember, you can install "that switch" without removing the shifter lever. Quote Share this post Link to post Share on other sites
Vicfreg 773 Report post Posted February 10 Hi Ersin, yes, thanks for that, that’s why I went back and looked and realized I had the wrong switch. Lol. Quote Share this post Link to post Share on other sites
Kris 90 Report post Posted February 10 The switch you have is for a c4 and bolts on the side of the trans between the shifter bracket and trans. The fmx neutral safety switch has the shifter light built in while the c4 switch and light are two separate parts. On a c4 setup, the light wire goes through the shifter like the picture I added. The neutral safety switch wire goes down the tunnel and up the firewall to the plug at the center of the firewall by the gauge feed wires. Quote Share this post Link to post Share on other sites
Vicfreg 773 Report post Posted March 2 I got the FMX switch mounted on the shifter, and ran the wires inside the car back to my trunk mounted solenoid near the battery. Works great, easy install. Thanks for all the help. Vic 1 RPM reacted to this Quote Share this post Link to post Share on other sites
