Integral. Ignition control modules are an essential component of your ignition system, helping to regulate spark generation in your engine using a small computer that controls the ignition coil. For an effective OEM replacement, use what the professionals use with the Vintage Ignition Module. It is designed for the 1987 Jeep Wrangler YJ.OEM Quality. This ignition module was created using only the highest quality materials for a precise fit.Warranty. This ignition module comes with a 12 month, 12,000-mile warranty that protects against defects in the workmanship and materials. Please visit the manufacturer’s website for additional details and limitations that may apply.Installation. If you don’t have the necessary mechanical expertise required to install this ignition module, you always have the option of having a professional complete installation.Application. The Vintage Ignition Module is compatible with the 1987 Jeep Wrangler YJ.