edwardthomson51@yahoo.com 1 Report post Posted December 17, 2020 THE RESISTOR ON A 70 MUSTANG COUPE HEATER BOX HAVE 4 PRONGS FOR WIRES......OR 3 ? THE OLD ONE ON MY OLD BOX HAS THE 4TH ONE EITHER CUT OFF OR BROKEN OFF FROM AGE.....I HAVE ANOTHER USED ONE ILL PUT ON BUT IT HAS THE BOTTOM FORTH PRONG ON IT.........AND I BELIEVE THE BLOWER MOTOR WIRE GOES TO THAT ONE........?????? MY OLD BOX IS GONE AND THE WIRING SO I HAVE TO FIGURE OUT THE WIRING THANKS ED Quote Share this post Link to post Share on other sites
danno 128 Report post Posted December 17, 2020 The 69 had a 3 prong plug. I would think the 70 is the same. I think the resistor has 4 prongs, the 4th one goes to teh blower. So I think you are correct, the 4th prong goes to the blower motor. Quote Share this post Link to post Share on other sites
edwardthomson51@yahoo.com 1 Report post Posted December 21, 2020 thanks..... ill try it....... the new resistors for sale seem to all be for a/c cars but my old resistor looks actually the same ....i wonder if i could use one of those without any problems?? wonder if anyone else has tried this? Quote Share this post Link to post Share on other sites
edwardthomson51@yahoo.com 1 Report post Posted December 21, 2020 the used resistor i am going to use is rusty and ill evaporust it to clean it up.... i would rather put a new one in it since the box is a repo new one...........and the blower motor is new... and the wiring will be new (using painless)...... first harness i am doing so i am trying not to make mistakes..... ed Quote Share this post Link to post Share on other sites
danno 128 Report post Posted December 21, 2020 It should work, as long as the resistors are intact and you know the correct way to connect the fan. Use an ohmmeter on the leads to insure the resistors are good. Quote Share this post Link to post Share on other sites
edwardthomson51@yahoo.com 1 Report post Posted December 21, 2020 I WILL THANKS.......I HEARD ON SOME REVIEWS FROM THE SCOTT DRAKE RESISTOR (FOR THE A/C CAR) WORKED FOR THE NON-A/C CARS LIKE MINE......A COUPLE OF GUYS SAID IT MATCHED THEIR OLD ONES THEY TOOK OUT....SO I WILL CHECK THAT ONE OUT TOO.... THANKS FOR YOUR HELP ED Quote Share this post Link to post Share on other sites
danno 128 Report post Posted December 21, 2020 You are correct, the resistors are the same for cars with and without AC. Quote Share this post Link to post Share on other sites
edwardthomson51@yahoo.com 1 Report post Posted December 21, 2020 THANK YOU FOR CONFIRMING THAT......ILL BUY A NEW ONE NOW........MERRY CHRISTMAS!! ED Quote Share this post Link to post Share on other sites
dmck 3 Report post Posted December 31, 2020 On 12/22/2020 at 5:38 AM, edwardthomson51@yahoo.com said: THANK YOU FOR CONFIRMING THAT......ILL BUY A NEW ONE NOW........MERRY CHRISTMAS!! ED Or find an electronics enthusiast, fixing it is not difficult. Quote Share this post Link to post Share on other sites
