2006 4300 INTERNATIONAL

HAVE A 2006 INTERNATIONAL 4300 7.3 WITH AN NO REVERSE LIGHTS CUSTOMER INFORMED US ABOUT IT MAY BE AN EXTERNAL SWITCH ON BELL HOUSING. NO SWITCH ON HOUSING(TRANSMISSION IS AN ALLISON 2000 TRANSMISSION). UPON FURTHER INSPECTION WE FOUND THAT THERE IS AN INTERNAL MLP SWITCH AND A PRESSURE SWITCH THAT ACTUATES WITH THE REVERSE LIGHTS. REPLACED THEM AND NOTHING CHANGED. AT THIS POINT I TOTALLY START OVER IGNORING THE CUSTOMERS NOTES. RETRACES FUSES AND WIRES FOUND A TEAR IN A PART OF HARNESS AND FIXED THAT AND REVERSE LIGHT HAD A FUSE THAT WAS BAD REPLACED THAT AND NOW I HAVE NO CRANK/NO START. GOOD NEWS IS I CAN JUMP THE STARTER AND I HAVE REVERSE LIGHTS NOW THOUGH LOL.